Akita
At a Glance
Weight (M)
100–130 lbs
Weight (F)
70–100 lbs
Height (M)
26–28 in
Height (F)
24–26 in
Best for
- ✓Experienced dog owners who understand large, independent, potentially dog-aggressive breeds
- ✓Single-dog or carefully managed multi-dog households where introductions and supervision are controlled
- ✓Owners who want a deeply loyal, calm family companion without the need for high-intensity daily exercise
- ✓Those who appreciate the Japanese breed temperament: quiet dignity, reserved composure, and selective bonding
- ✓Households without small animals or dogs the Akita cannot be reliably trusted around
Not ideal for
- ✕First-time or novice dog owners — this is emphatically not a beginner's breed
- ✕Multi-dog households where the dogs interact unsupervised — Akita dog aggression is serious and can be fatal to other dogs
- ✕Families with very young children — the Akita's tolerances have limits and small children can trigger guarding behavior
- ✕Owners who want a sociable, outgoing dog that gets along with everyone and every animal
- ✕People who cannot physically manage a 100–130 lb dog that has decided it wants to do something
- Japan's national dog and a symbol of loyalty — the story of Hachiko, who waited at Shibuya Station for nine years for his deceased owner, made the Akita world-famous
- Potentially dangerous without proper management — Akitas are powerful, dog-aggressive, and capable of serious harm if not correctly trained, socialized, and contained
- The "one family dog" — deeply devoted and affectionate within the family, but reserved to the point of aloofness with strangers
- Dog aggression is a breed-defining characteristic, not an individual quirk — most Akitas should not be trusted with unknown dogs
- Not for novice owners — the combination of size, power, independent thinking, and potential for dog aggression demands experienced, confident handling
History & Origins
The Akita originated in the mountainous Akita Prefecture on the northern island of Honshu in Japan, where the breed was developed as a large multipurpose hunting dog capable of pursuing and holding boar, deer, and the Asian black bear until hunters arrived. The Akita Matagi — the original hunting type — was a powerful, cold-hardy dog bred for rugged terrain and dangerous quarry.
By the 17th century, Akitas had become associated with the Japanese nobility and ruling class. Ownership was restricted by law to the nobility at certain periods, and specific rituals surrounded the care and handling of these dogs. The breed gained its current name from the Akita Prefecture where it was centered, and the dogs became embedded in Japanese cultural identity in a way few breeds achieve in any country.
Hachiko and the Symbol of Loyalty
The global fame of the Akita is inseparable from the story of Hachiko — an Akita belonging to Professor Hidesaburo Ueno of the University of Tokyo. Hachiko accompanied Ueno to Shibuya Station each morning and waited for his return each evening. When Ueno died of a cerebral hemorrhage at work in May 1925, Hachiko returned to Shibuya Station every evening for the next nine years and nine months until his own death in March 1935. The story became a national emblem of devotion and fidelity. A bronze statue of Hachiko at Shibuya Station — erected in 1934 during Hachiko's lifetime — remains one of the most visited sites in Tokyo.
The American Akita Divergence
American soldiers stationed in Japan after World War II brought Akitas back to the United States. The American-bred type diverged from the Japanese type over subsequent decades — becoming larger, heavier-boned, and accepting of all colors including pinto. The FCI recognizes the American and Japanese types as separate breeds. The AKC registers them under a single standard, though the two types remain visually and temperamentally distinct to experienced observers.
Temperament & Personality
The Akita is dignified, composed, deeply loyal to family, and profoundly reserved with strangers. This is not a sociable, outgoing breed. It is a breed of quiet power — one that observes more than it displays, bonds deeply and selectively, and does not perform affection for strangers.
Within the Family
Akitas are devoted to their families with a loyalty that earns the Hachiko comparison. They are affectionate, attentive, and often remarkably gentle with their own people — including children they were raised with. The bond is deep and genuine, not transactional. An Akita that trusts you is a remarkably rewarding companion. An Akita that does not trust you is a liability.
With Strangers
Reserved to the point of aloofness is accurate. Well-socialized Akitas are not aggressive toward strangers by default — they are watchful, controlled, and unimpressed. They do not solicit attention from people they do not know. They will allow interaction from strangers who approach correctly and are accepted by the family, but they do not warm quickly or broadly. Under-socialized Akitas can develop reactive or aggressive responses to strangers that are difficult to manage at their size and strength.
With Other Animals
Dog aggression is a defining breed characteristic. Most Akitas cannot be trusted with unfamiliar dogs, particularly of the same sex. The aggression can be sudden, intense, and difficult to interrupt once engaged. Small animals and household pets require careful management — the Akita's prey drive is significant. The breed's reputation as a "one dog household" breed is accurate for the majority of individuals.
Natural Instincts & Drive
The Akita was shaped by two distinct selection pressures: the hunting of large, dangerous game and the guarding of noble Japanese households. Both leave clear behavioral imprints.
Prey Drive
High prey drive is the norm. The instinct to pursue and subdue prey is well-developed and can activate quickly around small animals, running children, or fleeing animals. Once engaged, the drive is difficult to interrupt. Off-leash in unsecured areas is genuinely dangerous for this breed. A securely fenced yard and leashed walks are the appropriate containment approach.
Guardian Instinct
The guarding instinct in Akitas is serious — not decorative. They identify and assess threats, they hold territory, and they respond to perceived danger with a level of commitment that can cause serious injury. This instinct, paired with the breed's size and power, is why proper socialization and training is not optional. A well-socialized Akita with a confident owner channels guardian instincts appropriately. An under-socialized Akita in an inexperienced home is a serious safety liability.
Dog Aggression
Akita dog aggression is best understood as an instinct, not a behavior problem. The breed was used in dog fighting historically, and same-sex dog aggression is deeply embedded. Individual variation exists — some Akitas coexist peacefully with carefully chosen companion dogs — but the default assumption should be that an Akita cannot safely be trusted with unfamiliar dogs. This is not a statement about individual dogs being "bad." It is a breed reality that must be managed proactively.
Independence
Akitas were bred for tasks requiring solo initiative — holding dangerous game until the hunter arrived, protecting the household through the night. This produced an independent, self-directed animal that does not defer to humans automatically. The breed's intelligence is not in doubt — but it applies that intelligence to its own assessment of situations, not to compliance with commands. Training Akitas requires patience, consistency, and genuine leadership; force and intimidation are counterproductive and dangerous.
Life Stages
Puppy (0–6 months)
Akita puppies are deceptively manageable — small, fluffy, and playful. This window is the single most critical period for socialization. Akitas that are broadly socialized with diverse people, dogs, and environments in puppyhood are significantly safer and more manageable adults than those whose socialization was limited. Begin obedience training immediately with positive reinforcement. Establish handling and veterinary examination routines early — an adult Akita that does not accept handling is dangerous in medical contexts.
Adolescent (6–18 months)
Adolescence is when dog aggression typically emerges or escalates. A puppy that played well with other dogs at 10 weeks may no longer be reliable with unknown dogs at 12 months. This is not a socialization failure — it is the breed's genetics expressing on schedule. Manage the transition proactively: begin separating the Akita from unknown dogs before the first incident rather than after. Consistent, patient training through adolescence pays dividends.
Adult (2–7 years)
A well-trained, well-socialized adult Akita is a magnificent companion — calm, loyal, and genuinely impressive. Maintain the exercise commitment and the social bond. Annual health testing (thyroid, cardiac, eyes) should be ongoing for dogs in or near a breeding program. OFA hip evaluation at 24 months is the standard for breeding candidates.
Senior (7+ years)
Akitas age with dignity and often remain physically capable well into their senior years. Watch for signs of thyroid disease and hip arthritis. Twice-yearly veterinary visits are appropriate. Autoimmune conditions can emerge at any age but senior dogs should be monitored for skin and coat changes, eye changes, and immune-mediated conditions.
Health Profile
Elevated autoimmune disease prevalence — veterinarians treating Akitas should be aware of breed-specific drug sensitivities
Pemphigus, IMHA, and VKH syndrome all occur at higher rates in Akitas than in most breeds
The Akita's health profile is characterized by a relatively common orthopedic concern (hip dysplasia), a significant thyroid disease burden, and an unusual pattern of autoimmune conditions that require veterinarians experienced with the breed.
Autoimmune Disease: The Distinctive Akita Risk
Akitas are over-represented in studies of immune-mediated disease across multiple conditions. Pemphigus foliaceus causes blistering and crusting skin disease. Immune-mediated hemolytic anemia (IMHA) is a potentially life-threatening condition in which the immune system destroys the dog's own red blood cells. Vogt-Koyanagi-Harada (VKH) syndrome — an autoimmune uveitis with depigmentation — can cause blindness without prompt immunosuppressive treatment.
Akitas also have documented sensitivities to certain anesthetic agents and drugs. Veterinarians treating Akitas should be advised of the breed before any sedation or anesthesia protocol is finalized. This is not fearmongering — it is a practical safety consideration that any veterinarian treating Akitas should be aware of.
Hip Dysplasia
At approximately 11% prevalence in OFA-evaluated dogs, hip dysplasia is a significant concern in Akitas. The breed's size and weight amplify the impact of joint disease — an Akita with moderate hip dysplasia is a very large dog in chronic pain. OFA hip evaluation at 24 months minimum is required health testing for all breeding candidates.
Hypothyroidism
Thyroid disease is common in Akitas and contributes to the breed's elevated autoimmune burden — hypothyroidism in the breed is often immune-mediated. Annual thyroid evaluation is recommended for breeding dogs and advisable for all adults showing relevant signs.
| Condition | Risk | Test Available |
|---|---|---|
Hip Dysplasia Hip dysplasia is one of the most common orthopedic concerns in Akitas, with OFA data showing approximately 11% of evaluated dogs are affected — a significant rate in a heavy breed. Abnormal joint development causes laxity, progressive osteoarthritis, and chronic pain. Affected dogs show hindlimb stiffness, difficulty rising, reduced exercise tolerance, and a characteristic bunny-hopping gait. OFA hip evaluation at 24 months minimum is required health testing for responsible Akita breeders. Weight management is critical in affected dogs. | Moderate | OFA Hip Evaluation |
Progressive Retinal Atrophy (PRA) PRA causes progressive retinal degeneration leading to vision loss and blindness. The disease typically manifests in adulthood with initial night blindness, progressing to complete vision loss. DNA testing is available for specific PRA variants affecting Akitas. Annual CAER eye examination by a board-certified ophthalmologist is the standard monitoring approach and should be performed on all breeding dogs. | Moderate | PRA DNA Test / CAER Eye Examination |
Hypothyroidism Underactive thyroid function is common in Akitas and a significant breed health concern. Signs include weight gain, lethargy, coat changes (dry, thin, or patchy coat), skin thickening, and cold intolerance. Hypothyroidism is manageable with daily thyroid hormone supplementation, but the condition requires lifelong treatment and periodic bloodwork monitoring. OFA thyroid evaluation is recommended for all breeding dogs. | Moderate | OFA Thyroid Evaluation |
Autoimmune Diseases Akitas have a markedly elevated prevalence of immune-mediated conditions compared to most breeds. Pemphigus foliaceus (a blistering skin disease), immune-mediated hemolytic anemia (IMHA, destruction of red blood cells by the immune system), and Vogt-Koyanagi-Harada (VKH) syndrome — an autoimmune disease affecting the eyes and skin causing uveitis and depigmentation — all occur at higher rates in Akitas. Many of these conditions are serious and require immunosuppressive treatment. Some are potentially life-threatening. Akitas also show increased sensitivity to certain drugs and vaccines — veterinarians treating Akitas should be aware of breed-specific drug sensitivities. | High | No |
Bloat / Gastric Dilatation-Volvulus (GDV) GDV is a life-threatening emergency in which the stomach fills with gas and rotates on its axis, cutting off blood supply. Deep-chested large breeds like the Akita are at elevated risk. Signs include visibly distended abdomen, unproductive retching, restlessness, and rapid decline into shock. Without emergency surgery within hours, GDV is fatal. Prophylactic gastropexy at the time of spay or neuter significantly reduces the risk of the deadly volvulus component. | High | No |
Sebaceous Adenitis An inflammatory disease targeting the sebaceous glands of the skin, causing progressive gland destruction, hair loss, and skin scaling. Akitas are one of the most affected breeds. The condition varies in severity from mild cosmetic changes to severe widespread skin disease. There is no cure but the condition is manageable with appropriate topical treatments and dietary supplementation. OFA maintains a sebaceous adenitis registry for the breed. | Moderate | Skin Biopsy / OFA SA Registry |
Recommended Health Tests
| Test | Organization | Min Age | Required |
|---|---|---|---|
| Hip Evaluation | OFA | 24 months | Required |
| Thyroid Evaluation | OFA | Annual | Required |
| Eye Examination (CAER) | ACVO Ophthalmologist | Annual | Required |
| PRA DNA Test | OFA / Various labs | — | Recommended |
| Cardiac Evaluation | OFA / Cardiologist | Annual | Recommended |
Care Guide
Exercise
Akitas need moderate daily exercise — one to two hours is typically sufficient. They are not the hyperactive, relentlessly energetic type. A long daily walk plus yard time meets the needs of most adults. The exercise must be on leash or in a securely fenced area — an off-leash Akita that encounters an unknown dog, a fleeing animal, or a stranger perceived as a threat is a serious safety risk. A 6-foot fence with no footholds is the minimum enclosure standard.
Grooming
The Akita double coat sheds heavily, with twice-annual blowouts producing significant fur volumes. Weekly brushing during normal periods, and daily brushing during the two to three week blowouts, manages shedding effectively. An undercoat rake and slicker brush are the primary tools. Never shave an Akita — the double coat regulates body temperature in both heat and cold. Bathing every 6 to 8 weeks is appropriate.
Training
Akitas require consistent positive reinforcement training from an owner who is calm, confident, and patient. They do not respond well to harsh corrections — the breed will resist or shut down under compulsion, and challenging an Akita physically is unsafe given its size and strength. They are intelligent and can be trained to a high level of obedience, but the handler must have earned the dog's respect. Obedience classes with an experienced trainer who knows large independent breeds are strongly recommended for first-time Akita owners.
Veterinary Considerations
Inform any veterinarian treating your Akita of the breed before anesthesia or sedation — breed-specific drug sensitivities are documented. Annual thyroid evaluation, regular weight monitoring, and awareness of autoimmune disease signs are the ongoing health management priorities. Know the signs of GDV: distended abdomen, unproductive retching, restlessness. Know your nearest 24-hour emergency clinic location before you need it.
Living With a Akita
The Devotion Is Real
Akita owners consistently describe the bond the breed forms as qualitatively different from most dogs. An Akita that has chosen you is fully committed — attentive, protective, and genuinely affectionate in the private, reserved way the breed expresses it. The Hachiko story resonates because it reflects something true about the breed's capacity for loyalty. That devotion is one of the most rewarding things about living with an Akita.
The Safety Realities
Living with an Akita requires ongoing active management. The dog cannot be trusted off-leash in unsecured areas. Unknown dogs should not be approached without significant caution. Guests who are unfamiliar with the breed should be introduced carefully. Children outside the immediate family should not interact unsupervised with an Akita. These are not extraordinary precautions for this breed — they are the basic operational requirements of responsible Akita ownership.
Space and Containment
Akitas need adequate indoor space for a large, active dog. A securely fenced yard is important but not a substitute for daily walks — yard time alone does not meet exercise needs. The fence must be escape-proof: 6 feet minimum, no footholds, and regularly inspected. An Akita that has escaped and encountered another dog or a stranger on the street is a serious liability situation.
Shedding
The Akita's thick double coat sheds heavily and the twice-annual blowouts are significant events. Fur will be on clothing, furniture, and every surface of the home. This is not optional or manageable away — it is a feature of the breed that must be accepted. Regular grooming reduces the impact but does not eliminate it.
Breeding
Akita breeding requires serious health testing, honest temperament evaluation, and a commitment to producing dogs that can be safely managed by competent owners. The breed's safety implications make temperament evaluation an especially important component of a responsible breeding program — only dogs with stable, well-socialized temperaments within the breed standard should be bred.
Pregnancy Overview
Key fact
Akita Gestation Length
63 days from ovulation is average, but healthy deliveries from day 58–68 are well-documented.
- Average litter size is 6–9 puppies, with some variation to smaller or larger litters
- Akita dams are generally capable of natural whelping, but the breed's size means whelping complications require prompt veterinary access
- Puppies are large at birth relative to many breeds — consistent daily weight tracking is still essential
- Neonatal period monitoring is critical; competition at the nipple in larger litters can disadvantage smaller puppies without visible signs
Week-by-Week Pregnancy
Weeks 1–3: Minimal outward signs. Establish a baseline weight for the dam. Normal moderate exercise continues. Some dams show brief nausea around days 21–28.
Weeks 4–5: Veterinary confirmation via ultrasound from approximately day 25. Appetite increases. Begin transitioning to a higher-calorie pregnancy-appropriate diet. The dam may rest more and become slightly more affectionate.
Weeks 6–7: Abdominal enlargement becomes visible. Nipples enlarge and colostrum may begin to be expressed. Nesting behavior is common. Reduce vigorous exercise and introduce the whelping box. Avoid pressure on the abdomen.
Weeks 8–9: Radiograph at day 55 or later to confirm puppy count — essential for knowing when whelping is complete. Begin twice-daily rectal temperature monitoring. A drop below 99°F indicates labor within approximately 24 hours. Appetite typically decreases in the final 24–48 hours. Ensure the whelping kit is fully prepared and emergency veterinary contacts are immediately accessible.
Whelping
Akita dams typically whelp naturally. Puppies are large and litters can be substantial — monitor each delivery carefully. Contact your veterinarian immediately if the dam strains unproductively for more than 30–60 minutes without delivery, or if more than 4 hours pass between puppies. The dam's size and the puppies' size together mean complications can be serious. Plan whelping with emergency veterinary access in mind. Use the Whelping Date Calculator to build your timeline and the Whelping Supplies Checklist to confirm your kit is complete.
Newborn Puppy Weight Tracking
Typical Akita Birth Weight
Large at birth — daily weight tracking confirms adequate nursing in each puppy
Reference
Typical Birth Weights by Breed Size
Ranges are approximate. Individual litter variation is wide — trends matter more than targets.
Use the Animal Weight Tracker to log each puppy's weight from birth. Puppies should double their birth weight within 7 to 10 days. Any puppy failing to gain weight after day 2 needs supplemental feeding and veterinary assessment immediately. See the fading puppy syndrome guide for warning signs and intervention steps.
Growth Expectations
| Age | Male (lbs) | Female (lbs) | Notes |
|---|---|---|---|
| Birth | 0.9–1.3 | 0.7–1.1 | 400–600g typical |
| 2 weeks | 1.9–2.8 | 1.5–2.3 | Should double birth weight |
| 4 weeks | 4–7 | 3–6 | Mobile, beginning to eat |
| 8 weeks | 16–22 | 12–18 | Typical go-home age |
| 12 weeks | 26–36 | 20–28 | Rapid growth phase |
| 6 months | 65–90 | 48–70 | Approaching but not at adult size |
| 12 months | 85–115 | 60–88 | Near adult weight; still maturing |
The Real Talk
The Akita is a magnificent dog — powerful, loyal, dignified, and deeply bonded to its family. It is also one of the most frequently misrepresented breeds in terms of what ownership actually requires, and one of the most represented breeds in serious bite incident reports.
The Safety Conversation Has to Happen
Akitas can and do cause serious injury. The breed is over-represented in bite incident data not because individual Akitas are uniquely vicious, but because the breed ends up in homes unprepared for its requirements. A large, powerful dog with guarding instincts, potential dog aggression, and an independent temperament needs an owner who understands those characteristics and manages them proactively — not one who learned about them after an incident.
The "Not for Novice Owners" Warning Is Not Optional
Every Akita breed guide says it: not for novice owners. This is not a disclaimer or a hedge. It is accurate. The Akita's temperament requires an owner with genuine experience in reading large, dominant breeds; the physical demands require someone who can actually control the dog; and the safety implications require someone who takes containment and management seriously. This is not a breed you learn on.
For the Right Owner, Extraordinary
Experienced Akita owners are among the most devoted breed enthusiasts in the dog world. They describe the bond with an Akita as unlike anything they have experienced with other breeds — a quiet, unwavering loyalty that plays out over a lifetime. The breed's dignity, intelligence, and depth of character are genuinely extraordinary. The owners who succeed are those who respected what the breed required from the first day. They will tell you there is no better dog, for the right person. They are right.
Stats & Trends
AKC Popularity
The Akita consistently ranks between 50th and 60th in AKC registration — stable popularity reflecting a genuine enthusiast base rather than trend-driven demand. The breed has not experienced the kind of surge-and-crash popularity seen in breeds that become social media fashions, which has broadly been positive for breed quality and responsible ownership rates.
OFA Health Data
OFA hip evaluation data shows approximately 11% of evaluated Akitas are affected with hip dysplasia — a significant rate for a heavy breed and justification for the required OFA evaluation in breeding dogs. Thyroid evaluation participation reflects the breed's known hypothyroidism burden, with OFA thyroid data showing Akitas among the more frequently evaluated breeds for this condition.
Bite Incident Context
Akitas appear in serious bite incident reports at a rate disproportionate to their registration numbers. This data should not be used to characterize the breed as inherently dangerous — it reflects the mismatch between the breed's requirements and the ownership profile that sometimes acquires them. Well-managed Akitas in experienced homes rarely appear in these statistics. The data is useful primarily as a reinforcement of the message that the breed requires appropriately experienced ownership.
Akita FAQs
1Are Akitas good with other dogs?
Most Akitas are not reliably safe with unknown dogs, and many are dog-aggressive. This is a breed-defining characteristic, not an individual training failure. Akitas were historically used in dog fighting in Japan, and same-sex aggression in particular can be intense. Some Akitas coexist with other dogs they were raised with from puppyhood, while others cannot safely share a yard with any other dog. Akita owners must manage this reality carefully — an Akita that has injured or killed another dog is not an aberration, it is the breed expressing deep instincts.
2Are Akitas good with children?
With their own family's children, properly socialized Akitas can be affectionate and protective. However, Akitas have strong guarding instincts and clear tolerances — they may not accept rough handling, unexpected approaches from unknown children, or perceived threats to their family. The combination of size, power, and guarding instinct means interactions with children outside the immediate family should be supervised. Akitas are generally not recommended for families with very young children or households with frequent visiting children.
3What is the Hachiko story?
Hachiko was an Akita belonging to a professor at the University of Tokyo. Every day, Hachiko accompanied his owner to Shibuya Station and waited for him to return. When the professor died of a cerebral hemorrhage at work in 1925, Hachiko returned to Shibuya Station every day for the next nine years until his own death in 1935 — waiting for an owner who never came. The story became a symbol of loyalty in Japan. A bronze statue of Hachiko stands at Shibuya Station today and is one of the most visited landmarks in Tokyo.
4What is the difference between an American Akita and a Japanese Akita Inu?
The two are distinct types with significant differences in appearance, though the AKC registers them as a single breed (Akita). The American Akita developed from dogs brought to the US after WWII and is larger, heavier, and comes in all colors including pinto. The Japanese Akita Inu is smaller, more refined, and comes only in red, brindle, sesame, and white — no pinto. The FCI registers them as two separate breeds. Most breeders in Japan consider the American type to have diverged significantly from the original Japanese standard.
5Do Akitas require a lot of exercise?
Akitas are moderate in their exercise needs compared to many large breeds. One to two hours of daily activity is typically sufficient. They are not the frantically energetic type that demands two-hour runs. That said, they are powerful dogs that should be kept in good physical condition, and a bored or under-exercised Akita can become destructive or more difficult to manage. Leashed walks, play in a securely fenced yard, and structured exercise are the appropriate outlets.
6What health tests should Akita breeders perform?
Required minimum health testing for Akita breeding dogs includes OFA hip evaluation (24 months minimum), OFA thyroid evaluation, and CAER annual eye examination. PRA DNA testing is recommended. Cardiac evaluation is advisable given the breed's autoimmune disease burden. There are no DNA tests for Akita autoimmune conditions — awareness and family health history documentation are the primary tools for managing these risks in a breeding program.
7Are Akitas suitable for first-time dog owners?
No — firmly and clearly no. The Akita's combination of size, physical power, independent temperament, potential for dog aggression, and guarding instincts requires an owner with genuine experience in handling large, dominant breeds. First-time dog owners who underestimate the breed's needs end up with dogs that are difficult to manage safely. The Akita is one of the most reported breeds in serious bite incidents — not because the breed is uniquely vicious, but because it ends up in homes unprepared for its requirements.
Important notes
This breed profile is for educational purposes only. BreedTools does not provide veterinary advice. Individual dogs vary — breed profiles describe tendencies, not guarantees. Always consult a qualified veterinarian for health decisions and a reputable breeder or breed club for breed-specific guidance.
Health statistics and prevalence data are sourced from OFA, breed club health surveys, and published veterinary research. Where exact numbers are unavailable, ranges and qualitative assessments are used.