Dogs & cats · editorial guide
Common Toxic Ingredients Hidden in Human Food
Everyday ingredients in your kitchen that are dangerous or deadly to pets — even in small amounts.
- Dogs & cats ratings
- 320
- Acutely toxic
- 30
- Unsafe
- 68
- Safe
- 86
Archive verdict for this guide
For dogs and cats pooled, 30 of 320 ratings are acutely toxic (9%), 31% are unsafe or toxic, and Sweets & Desserts is the densest hazard category at 77.8%.
- 30
- Toxic
- 68
- Unsafe
- 136
- Caution
- 86
- Safe
Counts are live SQL over food_safety (dogs and cats pooled). Dataset vintage: August 2026.
Hazard share by category · dogs & cats
Xylitol: The Hidden Killer
Xylitol is an artificial sweetener found in sugar-free gum, mints, toothpaste, some peanut butters, baked goods, and vitamins. In dogs, even a small amount causes rapid insulin release leading to hypoglycemia (dangerously low blood sugar) within 10-60 minutes. Higher doses cause liver failure within 12-72 hours. Cats appear less susceptible but should still avoid it. Always check peanut butter labels before sharing with your dog — some popular brands have added xylitol in recent years.
Allium Family: Onions, Garlic, Leeks, and Chives
All members of the allium family contain organosulfur compounds that damage red blood cells in dogs and cats, causing hemolytic anemia. Cats are especially sensitive — as little as 5 grams of onion per kilogram of body weight can be toxic. The damage is cumulative, meaning small exposures over time can cause problems even if a single dose seems harmless. Garlic powder is 5x more potent than fresh garlic. Watch for these in seasonings, sauces, baby food, and prepared meals.
Theobromine and Caffeine
Chocolate contains theobromine, which dogs metabolize much slower than humans. Dark chocolate and baking chocolate are the most dangerous — as little as 1 ounce of baking chocolate per pound of body weight can be lethal. Milk chocolate is less concentrated but still dangerous in quantity. Caffeine in coffee, tea, energy drinks, and some medications produces similar symptoms: restlessness, rapid breathing, heart palpitations, muscle tremors, and seizures.
Grapes and Raisins: Unknown but Deadly
The toxic compound in grapes and raisins has never been definitively identified, but the effects are well documented: acute kidney failure in dogs, sometimes from as few as 4-5 grapes. There is no known safe dose, and sensitivity varies unpredictably between individual dogs — some eat grapes without incident while others develop kidney failure from a single grape. Raisins are more concentrated and therefore more dangerous per gram. Currants carry the same risk.
Alcohol and Raw Dough
Ethanol is toxic to both dogs and cats at much lower doses than in humans. Beer, wine, spirits, and even alcohol-containing foods (rum cake, wine sauces) can cause vomiting, diarrhea, CNS depression, breathing difficulty, coma, and death. Raw yeast dough is doubly dangerous: the yeast produces ethanol in the warm environment of the stomach, and the dough expands, potentially causing gastric bloat — a life-threatening emergency requiring immediate surgery.
If your pet ate something dangerous
Call the ASPCA Animal Poison Control Center: 888-426-4435 (24/7, consultation fee may apply) or your nearest emergency veterinary clinic immediately.
See also methodology, dog foods, tools, and about.
PlainPetFood publishes an editorial food-safety compilation. When the FDA or ASPCA Animal Poison Control Center names a food as dangerous, that food's page links the source; other ratings are identified as editorial guidance. Guide KPIs and category hazard bars are computed live from food_safety for the guide's species scope. Section prose is editorial; no hazard percentage is typed by an editor. See our editorial standards & corrections policy, report a correction, the methodology behind these numbers, or contact the editorial team. Data current as of August 29, 2026.