Your dog stole something from the counter. Is it harmless, likely to cause an upset stomach, or an emergency? The answer depends on what was eaten, the amount, your dog’s size and how long ago it happened. Some everyday human foods can cause serious poisoning in dogs even before symptoms appear.
If your dog ate a potentially toxic food, call your veterinarian, an emergency animal hospital or a pet poison-control service promptly. Do not wait for vomiting or other signs. Keep the packaging and estimate the amount eaten. Do not induce vomiting unless a veterinarian or poison specialist instructs you to do so.
Foods that pose serious poisoning risks
Chocolate, cocoa and caffeine
Chocolate and caffeinated products contain methylxanthines. High-cocoa chocolate, baking chocolate and cocoa powder are more concentrated than milk chocolate. Exposure can cause vomiting, agitation, fast heart rate, tremors or seizures. The risk is related to the type, amount and dog’s weight; poison specialists can assess those details.
Grapes, raisins and currants
Grapes and raisins are linked to acute kidney injury in some dogs. The reaction can be unpredictable, so do not use a “safe number of grapes” rule. Tartaric acid is a suspected toxic component; research is ongoing. Raisin bread, trail mix and baked goods can contain hidden exposures.
Xylitol, also labeled birch sugar
This sweetener may be found in some sugar-free gum, candies, nut butters, dental products and baked goods. In dogs, it can cause a dangerous drop in blood glucose and sometimes liver injury. Suspected ingestion is an immediate reason to call emergency veterinary care, even if your dog looks normal.
Onions, garlic, chives and leeks
Allium-family foods can damage red blood cells and cause anemia. Raw, cooked, dried and powdered forms all matter. Symptoms may be delayed. A seasoned leftover meal can be risky even when the main ingredient seems harmless.
Alcohol, uncooked yeast dough and macadamia nuts
Alcohol can cause serious neurologic and metabolic problems. Raw rising dough may expand in the stomach and produce alcohol as it ferments. Macadamia nuts can cause weakness, vomiting, tremors and difficulty walking. Have an ingestion assessed rather than trying a home remedy.
Other foods that are risky for different reasons
Not every food on a viral “toxic foods” list is poisonous in the same way. Cooked bones may splinter or obstruct the digestive tract; fruit pits and corn cobs may cause choking or intestinal blockage. High-fat scraps may trigger gastrointestinal upset or pancreatitis in susceptible dogs. Dairy often causes diarrhea because many dogs digest lactose poorly. Raw animal products can carry bacteria; they are a food-safety concern rather than a single specific toxin.
Avocado flesh is not equivalent to xylitol or grapes in dogs, but the pit presents an obstruction hazard, high-fat flesh may upset the stomach, and avocado can be dangerous for other species. Context is important; call a veterinarian if there is uncertainty about what was swallowed.
What to do in the first few minutes
- Move the food and wrappers out of reach, without risking a bite.
- Record the product, ingredients, estimated quantity and time of exposure.
- Call your veterinarian or an animal poison-control service. In the US, ASPCA Animal Poison Control is 888-426-4435; Pet Poison Helpline is 855-764-7661. Consultation fees may apply.
- Follow their instructions; avoid salt, hydrogen peroxide, milk, oil or other home “antidotes.”
- Go to an emergency hospital immediately if the dog collapses, has seizures, struggles to breathe or is otherwise severely ill.
Prevention that actually helps
Store sugar-free products and medication-containing foods behind closed doors, secure garbage, and remind visitors not to share table scraps. Check labels on nut butters, baked goods and treats. For a treat, use small pieces of plain dog-safe food in moderation and ask your veterinary team about restrictions for dogs with diabetes, obesity or other conditions.
Sources: ASPCA: People foods to avoid feeding pets; FDA: pet emergencies and poison-control contacts.
This article is educational and not an individualized toxicology assessment or substitute for emergency veterinary advice.
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.