If your dog just ate something toxic
Call the ASPCA Animal Poison Control Center at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661 (consultation fees may apply), or contact your vet or the nearest emergency animal hospital immediately.
Have ready: what your dog ate, roughly how much, and when. Do not induce vomiting or give any home remedy unless a vet or poison control specifically tells you to — some substances cause more damage coming back up, and timing matters.
Quick reference: common toxic foods
| Food | Risk level | Main concern |
|---|---|---|
| Chocolate (especially baking/dark) | High | Theobromine toxicity — heart, nervous system |
| Grapes & raisins | High | Acute kidney failure, even in small amounts |
| Xylitol (sugar-free gum, some peanut butter) | High | Rapid, severe blood sugar drop; liver failure |
| Onions & garlic (raw, cooked, or powdered) | High | Damages red blood cells over time |
| Alcohol | High | Rapid intoxication, respiratory depression |
| Macadamia nuts | Medium | Weakness, tremors, temporary paralysis of hind legs |
| Avocado | Medium | Persin can cause GI upset; pit is a choking/blockage hazard |
| Cooked bones | Medium | Splinter risk — internal punctures, blockages |
| Raw yeast dough | Medium | Expands in the stomach; produces alcohol as it ferments |
| Excess salt | Medium | Sodium ion poisoning in large quantities |
The most dangerous foods, explained
Chocolate
Chocolate contains theobromine, a compound dogs metabolize far more slowly than humans do, which lets it build up to toxic levels. Darker, more concentrated chocolate (baking chocolate, dark chocolate, cocoa powder) is significantly more dangerous than milk chocolate for the same weight consumed. Symptoms can include vomiting, diarrhea, restlessness, a racing heart rate, tremors, and in severe cases, seizures. Because toxicity depends on both the type of chocolate and your dog’s size, any chocolate ingestion is worth a call to your vet or poison control rather than trying to estimate risk yourself.
Grapes and raisins
Grapes and raisins are linked to acute kidney failure in dogs, and unlike many other toxic foods, the dangerous dose isn’t reliably predictable — some dogs have reacted severely to a small handful, while other dogs have eaten more without apparent harm, and researchers still don’t fully understand why some dogs are more sensitive than others. Because there’s no safe threshold that’s been established, the standard guidance is to treat any grape or raisin ingestion as an emergency and call your vet immediately rather than waiting to see if symptoms develop.
Xylitol
Xylitol is a sugar substitute found in sugar-free gum, some peanut butters, baked goods, and toothpaste. In dogs, it triggers a rapid, dangerous drop in blood sugar and can cause liver failure, sometimes within hours of ingestion. It’s become a much more common source of poisoning as xylitol has been added to more everyday products, so it’s worth checking the ingredient label on sugar-free peanut butter specifically before sharing it with your dog, and keeping sugar-free gum well out of reach.
Onions and garlic
Onions and garlic, in any form — raw, cooked, powdered, or as part of a seasoning blend — contain compounds that damage a dog’s red blood cells, potentially leading to anemia. The effect is cumulative, meaning repeated small exposures (leftovers seasoned with onion or garlic powder, for instance) can build up over time even if a single exposure doesn’t cause obvious symptoms right away.
Other everyday hazards worth knowing
- Alcohol: even small amounts affect dogs far more severely than humans, and can cause dangerous drops in body temperature, blood pressure, and breathing rate
- Macadamia nuts: can cause weakness, vomiting, tremors, and temporary hind-leg weakness or paralysis, usually resolving within 24–48 hours with supportive vet care
- Cooked bones: become brittle and splinter easily, creating a real risk of internal punctures or blockages — raw bones carry lower splinter risk but their own set of considerations
- Raw bread dough: yeast continues to ferment and expand in a warm stomach, producing both a physical blockage risk and alcohol as a byproduct
What to do if your dog eats something on this list
Don’t wait for symptoms to appear before acting — by the time visible symptoms show up, treatment can be more complicated and less effective. Call your vet, an emergency animal hospital, or a poison control hotline right away, and have as much information as possible ready: what was eaten, an estimate of how much, and roughly when. Do not attempt to induce vomiting or give any home remedy unless specifically instructed to by a vet or poison control professional — some substances cause additional harm on the way back up, and the right response depends on exactly what was ingested.
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A quick-reference chart for your fridge or pantry door, covering the foods on this list plus a few more, with emergency contact numbers built in.
Coming soonFrequently asked questions
How much chocolate is dangerous for a dog?
It depends on both the type of chocolate and your dog’s size — darker chocolate is more concentrated and dangerous by weight than milk chocolate. Because the safe threshold varies so much, any chocolate ingestion is worth a call to your vet or poison control rather than trying to calculate risk on your own.
Are grapes toxic to all dogs?
The exact mechanism and individual sensitivity aren’t fully understood, and there’s no established safe amount, which is why the standard advice treats any grape or raisin ingestion as a potential emergency regardless of the dog’s size or breed.
What human foods are actually safe for dogs?
Plain cooked chicken, carrots, plain pumpkin, blueberries, and plain rice are commonly considered safe in moderation for most healthy dogs. When in doubt about a specific food not covered here, it’s worth a quick check with your vet before sharing it, especially for a dog with an existing health condition.
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