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What human foods are toxic to dogs and cats?

2 min readLast reviewed Jun 28, 2026 by JWB

The confirmed-toxic list

  • Chocolate (theobromine), darker chocolate is worse; baker's chocolate is dangerous in small amounts.
  • Xylitol, common in sugar-free gum, mints, some peanut butters, baked goods. Fatal to dogs at small doses.
  • Grapes and raisins, mechanism unknown, doses unpredictable; some dogs develop kidney failure from a few grapes.
  • Onions, garlic, leeks, chives, cause oxidative damage to red blood cells; cats especially sensitive.
  • Macadamia nuts, cause weakness, vomiting, hyperthermia in dogs.
  • Alcohol, and raw bread dough, which ferments in the stomach.
  • Caffeine, coffee grounds, tea bags, energy drinks.
  • Cooked bones, splinter and perforate the GI tract. Raw bones carry pathogen risk (see raw FAQ) but don't splinter the same way.
  • Lilies (cats), all parts, including pollen, cause acute kidney failure. Even brushing against a bouquet can be fatal.

If your pet ingests something

  1. Call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 (consultation fee applies but it's worth it).
  2. Do not induce vomiting unless explicitly told to, some substances (caustics, batteries) cause more damage coming back up.
  3. If you can, take a photo of the packaging and note the time, amount, and your pet's weight.
  4. For lilies in cats, go to an emergency vet immediately, every hour matters for kidney protection.

Sources

  1. ASPCA Animal Poison Control, People foods to avoid feeding your pets · verified 2026-06-28
  2. American Veterinary Medical Association, Household hazards · verified 2026-06-28

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