Use our toxicity calculators for instant risk assessment
If you know what your dog ate, use the specific calculator for an immediate risk level based on your dog's weight and the amount ingested. These tools use published veterinary toxicology thresholds.
Chocolate Toxicity Calculator
Enter weight, chocolate type, and amount eaten
Grape & Raisin Toxicity Calculator
No confirmed safe dose — always an emergency
Xylitol Toxicity Calculator
Sugar-free products — acts within minutes
Onion & Garlic Toxicity Calculator
All allium plants — cumulative toxicity
Food Safety Checker
Search 50+ foods rated safe, caution, or toxic
Medication Dosage Calculator
Includes emergency hydrogen peroxide dosing
Step-by-step: what to do if your dog eats something toxic
Stay calm. Panicking wastes the minutes that matter most. Follow these steps in order.
- Remove access. Take the substance away from your dog and any other animals in the household. If it's a plant, move the dog away from it.
- Identify what was eaten. Save the packaging, take a photo, or note the exact product name. Your vet needs to know the specific substance, not just "chocolate" or "gum."
- Estimate the amount. How much was in the package before? How much is left? Even a rough estimate helps your vet calculate toxicity.
- Note the time. When did the ingestion happen? If you're not sure, when was the last time the substance was intact? Time since ingestion determines treatment options.
- Call your vet or poison control. Do not Google home remedies. Do not induce vomiting without professional guidance. Call your regular vet, or if after hours, call your nearest emergency vet or the ASPCA Poison Control Center at (888) 426-4435.
- Follow their instructions exactly. They may tell you to come in immediately, induce vomiting at home, monitor at home, or bring the packaging with you.
The most dangerous foods for dogs
Not all toxic foods are equally dangerous. This severity scale reflects how quickly and severely each substance can harm a dog, based on published veterinary toxicology data.
Xylitol
Can cause fatal hypoglycemia within 15–30 minutes. Found in sugar-free gum, candy, peanut butter, toothpaste, and baked goods. As little as 0.1 g/kg causes insulin surge; 0.5 g/kg causes liver failure.
Grapes & raisins
No confirmed safe dose. Can cause acute kidney failure within 24–72 hours. The toxic compound (tartaric acid) varies between individual fruits, making any amount potentially lethal.
Chocolate
Theobromine toxicity. Dark and baker's chocolate are most concentrated. Milk chocolate is dangerous in larger amounts. Symptoms in 2–6 hours: vomiting, diarrhea, rapid heart rate, seizures.
Onions, garlic & alliums
Damage red blood cells (Heinz body anemia). Toxicity is cumulative. Small amounts over several days can be as dangerous as a large single dose. All forms: raw, cooked, powder, dehydrated.
Macadamia nuts
Cause weakness, vomiting, tremors, and hyperthermia. Usually not fatal but extremely uncomfortable. Symptoms within 12 hours, resolve in 24–48 hours.
Alcohol & bread dough
Dogs are far more sensitive than humans. Beer, wine, spirits, and raw bread dough (yeast produces alcohol in the stomach). Can cause vomiting, disorientation, respiratory failure.
Foods that are toxic in any amount
| Food | Toxic compound | Onset | Why it's dangerous |
|---|---|---|---|
| Xylitol (sugar-free products) | Xylitol | 15–30 min | Massive insulin release → hypoglycemia, liver failure |
| Grapes & raisins | Tartaric acid (suspected) | 24–72 hrs | Acute kidney failure — no safe dose established |
| Dark/baker's chocolate | Theobromine | 2–6 hrs | Cardiac stimulant — seizures, arrhythmia, death |
| Onions & garlic | N-propyl disulfide | Days (cumulative) | Destroys red blood cells → hemolytic anemia |
| Caffeine | Methylxanthine | 1–2 hrs | Same mechanism as chocolate — cardiac and neurological |
| Alcohol | Ethanol | 30–60 min | CNS depression, respiratory failure, death |
| Raw bread dough | Ethanol + expansion | 30–60 min | Yeast produces alcohol; dough expands in stomach |
ASPCA Poison Control, Merck Veterinary Manual, Veterinary Partner
Foods that are dangerous in larger amounts
| Food | Risk level | Notes |
|---|---|---|
| Milk chocolate | Moderate | Less theobromine than dark — still dangerous by volume |
| Macadamia nuts | Moderate | Weakness, tremors — usually not fatal |
| Avocado (flesh) | Low–Moderate | Persin toxicity — mostly a problem in birds, mild GI in dogs |
| Cooked bones | Moderate | Splintering risk — can puncture intestines |
| Fatty foods (bacon, butter) | Low–Moderate | Pancreatitis risk, especially in predisposed breeds |
| Nutmeg | Moderate | Myristicin toxicity at high doses — tremors, seizures |
| Salt (large amounts) | Moderate | Sodium ion poisoning — vomiting, tremors, high temperature |
ASPCA Poison Control, PetMD
Foods that are safe for dogs
Not everything is dangerous. Many common human foods are perfectly safe — and some are even nutritious — for dogs when served plain, unseasoned, and in moderation.
| Safe food | How to serve | Benefits |
|---|---|---|
| Chicken, turkey, beef | Cooked, plain, boneless | Lean protein — great for sensitive stomachs |
| Carrots | Raw or cooked, cut to size | Low calorie, good for teeth, vitamin A |
| Blueberries | Fresh or frozen, whole | Antioxidants, fiber, vitamin C |
| Plain pumpkin | Canned (not pie filling), no spices | Digestive support — helps diarrhea and constipation |
| Sweet potato | Cooked, plain, no skin | Fiber, beta-carotene, vitamin B6 |
| Watermelon | Seedless, no rind | Hydrating, vitamins A, B6, C |
| Green beans | Raw, steamed, or canned (no salt) | Low calorie filler for weight management |
| Apples | Sliced, no seeds or core | Fiber, vitamin A and C — seeds contain amygdalin |
| Plain rice | Cooked white or brown | Bland diet staple for GI upset |
| Bananas | Peeled, in moderation | Potassium, magnesium — high in sugar so limit quantity |
| Eggs | Cooked (scrambled, boiled) | Complete protein, biotin, selenium |
| Plain yogurt | No sweeteners, no xylitol | Probiotics for gut health — check label carefully |
AKC, AVMA, PetMD
Emergency first aid at home
These are temporary measures while you wait for veterinary guidance or are in transit to the clinic. They are not replacements for professional treatment.
Inducing vomiting with hydrogen peroxide
Only do this if directed by your vet or poison control. This is appropriate for recent ingestion (within 1–2 hours) of non-corrosive substances like chocolate, grapes, or xylitol-containing products.
| Step | Details |
|---|---|
| 1. Use 3% hydrogen peroxide only | Not the stronger concentrations used for cleaning — only the standard 3% found in brown bottles at pharmacies |
| 2. Dose: 1 ml per pound of body weight | Maximum 45 ml (3 tablespoons) regardless of dog size. Use a syringe or turkey baster |
| 3. Give with a small amount of food | A piece of bread or small meal helps activate the peroxide in the stomach |
| 4. Walk the dog gently | Movement helps trigger vomiting. Most dogs vomit within 10–15 minutes |
| 5. If no vomiting in 15 minutes | You may give ONE more dose at the same amount. Do not give a third dose |
| 6. Collect the vomit | Bring it to the vet if possible — helps confirm what was ingested and how much came back up |
ASPCA Poison Control, Merck Veterinary Manual
Activated charcoal
Activated charcoal can bind toxins in the stomach and reduce absorption. However, it should only be given under veterinary direction — incorrect use can cause aspiration pneumonia, and it doesn't work for all toxins (ineffective against xylitol, alcohol, and heavy metals). Your vet may administer it at the clinic or instruct you to give a specific dose at home.
What to tell your vet
When you call, have this information ready:
- Your dog's breed, age, and weight
- What they ate — exact product name, ingredients if possible
- How much — estimate the amount consumed
- When — time of ingestion or when you discovered it
- Any symptoms you're seeing — vomiting, tremors, lethargy, drooling
- Any pre-existing conditions or medications your dog is on
Non-food toxins to know about
Food isn't the only risk. Several common household and outdoor substances are highly toxic to dogs.
Antifreeze
Sweet-tasting, extremely lethal. As little as 1 tablespoon can kill a small dog. Causes kidney failure within 12–24 hours. Treatment must begin within hours to be effective.
Rodent poison
Different types have different mechanisms: anticoagulants cause internal bleeding, bromethalin causes brain swelling, cholecalciferol causes kidney failure. Always bring the packaging to the vet.
Human medications
Ibuprofen, acetaminophen (Tylenol), antidepressants, and ADHD medications are the most commonly reported. A single pill can be lethal to a small dog.
Slug & snail bait
Metaldehyde causes rapid-onset seizures and tremors. Common in gardens. Symptoms within 1–3 hours.
Essential oils
Tea tree, pennyroyal, wintergreen, and pine oils are particularly toxic. Diffusers in enclosed rooms can cause respiratory distress in dogs.
Fertilizers & herbicides
Most cause GI upset. Blood meal and bone meal fertilizers are palatable to dogs and can cause pancreatitis or GI blockage in large amounts.
Prevention: keeping your dog safe
- Store all medications in closed cabinets — not on counters, nightstands, or in bags on the floor
- Check ingredient labels on peanut butter, gum, candy, and baked goods for xylitol (also listed as birch sugar or E967)
- Keep chocolate out of reach during holidays — Halloween, Christmas, Easter, and Valentine's Day are peak chocolate toxicity periods
- Secure garbage cans — dogs will eat bones, food scraps, and packaging from the trash
- Use pet-safe ice melt in winter — standard rock salt and chemical de-icers irritate paws and are toxic if licked
- Clean up antifreeze spills immediately — its sweet taste attracts dogs
- Keep a pet first aid kit with 3% hydrogen peroxide, emergency numbers, and your dog's weight written down
- Save poison control numbers in your phone now — not during the emergency
Emergency contacts
| Service | Number | Notes |
|---|---|---|
| ASPCA Animal Poison Control | (888) 426-4435 | $75 consultation fee — available 24/7/365 |
| Pet Poison Helpline | (855) 764-7661 | $85 per case — 24/7/365 |
| Your regular vet | (look up now) | Save their number and after-hours number |
| Nearest emergency vet | (look up now) | Know the location and drive time before you need it |
Sources: ASPCA Animal Poison Control Center, Pet Poison Helpline, Merck Veterinary Manual (12th ed.), AVMA, AKC Canine Health Foundation, PetMD, Veterinary Partner (VIN). This article is for educational purposes and does not replace professional veterinary advice. In any suspected poisoning, contact a veterinarian immediately.
Dog poisoning FAQs
1What is the most common cause of dog poisoning?
Chocolate is the most commonly reported canine toxicity case, followed by xylitol (found in sugar-free products), rodent poison, and human medications like ibuprofen and acetaminophen. Most cases happen at home with items owners didn't realize were dangerous.
2How quickly does poisoning affect a dog?
It depends entirely on the substance. Xylitol can cause symptoms within 15–30 minutes. Chocolate symptoms typically appear within 2–6 hours. Grape and raisin toxicity may not show kidney damage signs for 24–72 hours. Onion toxicity is cumulative and can take days to manifest. Time is always critical — don't wait for symptoms to appear before calling your vet.
3Should I make my dog vomit if they ate something toxic?
Only if directed by a veterinarian or poison control, and only within 1–2 hours of ingestion. Never induce vomiting for corrosive substances (bleach, drain cleaner), petroleum products, sharp objects, or if the dog is unconscious, seizing, or having difficulty breathing. The standard method is 3% hydrogen peroxide (1 ml per pound of body weight, max 45 ml), but always call a professional first.
4What human foods are safe for dogs?
Many plain, unseasoned foods are safe: cooked lean meats (chicken, turkey, beef), plain rice and pasta, carrots, green beans, blueberries, watermelon (no seeds), apples (no seeds), sweet potatoes, plain pumpkin, and bananas. Always introduce new foods gradually and avoid anything with added salt, sugar, spices, or seasonings.
5Is one grape enough to kill a dog?
Potentially, yes. There is no established safe dose for grapes or raisins. Some dogs eat large quantities with no effect; others develop acute kidney failure from a single grape. The toxic compound has only recently been identified (tartaric acid) but individual sensitivity varies dramatically. Treat every grape or raisin ingestion as a veterinary emergency.
6How much chocolate is dangerous for a dog?
It depends on the type. Dark chocolate and baker's chocolate are the most dangerous — as little as 1 ounce per pound of body weight can be lethal. Milk chocolate is less concentrated but still dangerous in larger amounts. White chocolate has negligible theobromine. Use our Chocolate Toxicity Calculator for an instant risk assessment based on your dog's weight and the type of chocolate eaten.
7What should I keep in a pet first aid kit?
Essential items include: 3% hydrogen peroxide (for vet-directed vomiting), activated charcoal (vet-directed only), digital thermometer, gauze pads and rolls, adhesive tape, blunt-tipped scissors, tweezers, saline eye wash, disposable gloves, emergency blanket, and a printed card with your vet's number, emergency vet number, and ASPCA Poison Control (888-426-4435).