A dog can steal a snack in seconds, and the label “people food” does not tell you whether that snack is safe. Some common ingredients can cause kidney injury, low blood sugar, anemia, or serious heart and nervous-system effects in dogs. If your dog has eaten a potentially toxic food, contact a veterinarian or animal poison-control service now. Do not wait for symptoms.
The highest-priority foods to keep away from dogs
Grapes, raisins and foods that contain them
Grapes, raisins, and products containing them can cause acute kidney injury in some dogs. The amount that causes injury is unpredictable, so there is no reliable safe serving. Check granola, trail mix, fruit bread and baked goods for hidden raisins.
Xylitol, also called birch sugar
This sweetener appears in some sugar-free gums, candies, dental products and foods. In dogs it can trigger a dangerous drop in blood glucose, and some exposures can injure the liver. Read ingredient labels rather than assuming a “sugar-free” product is harmless.
Chocolate, cocoa and caffeine
Chocolate and caffeinated foods contain methylxanthines, which can affect the heart and nervous system. Baking chocolate and cocoa powder are especially concentrated, though other chocolate products can also be harmful. Keep coffee grounds, energy drinks and tea bags inaccessible.
Onions, garlic, leeks and chives
These allium vegetables can damage red blood cells. Raw, cooked, powdered and dried forms can be a problem; seasoning blends and sauces may contain them even when vegetables are not obvious.
Alcohol, raw bread dough and macadamia nuts
Alcohol is toxic to dogs. Unbaked yeast dough can expand in the stomach and produce alcohol during fermentation. Macadamia nuts can cause weakness, vomiting, tremors and problems with coordination. These are not safe treats.
Other foods that can make dogs ill
Very fatty leftovers may provoke vomiting or pancreatitis in susceptible dogs. Cooked bones can splinter or obstruct the digestive tract. Large quantities of salt, some mushrooms, and spoiled foods also create risks. Not every problematic food acts through the same toxin; quantity, ingredients and your dog’s size can change the urgency.
What to do if your dog ate something dangerous
- Remove access to the food without risking a bite.
- Keep the wrapper or ingredient list, and estimate the amount and time of ingestion.
- Call your veterinarian, an emergency animal hospital, or the ASPCA Animal Poison Control Center at 888-426-4435. A consultation fee may apply.
- Follow professional advice on where to go and what to bring. Do not induce vomiting or give home remedies unless a veterinary professional specifically instructs you to do so.
Vomiting, weakness, trembling, unsteadiness, seizures, collapse, breathing difficulty, or unusual sleepiness require emergency attention. Importantly, an apparently normal dog may still need treatment after a hazardous exposure. See our related guide to dog poisoning emergency signs.
How to prevent accidental poisoning
Store sweets, gum, baking supplies and leftovers behind closed doors. Remind family members that “just one bite” is not a safe rule. Keep an up-to-date medication and food list handy for emergencies. If you want to share human food, check each ingredient before offering it; our article on table scraps for dogs explains safer choices.
Reference: ASPCA Animal Poison Control, People Foods to Avoid Feeding Your Pets. This article is educational and is not a substitute for emergency veterinary assessment.
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.