What Human Foods Are Toxic to Dogs?

Quick Answer: The most dangerous foods for dogs are: xylitol (artificial sweetener in many foods), grapes and raisins, onion and garlic (all forms), chocolate, macadamia nuts, alcohol, avocado, and cooked bones. Even small amounts of some of these — particularly xylitol and grapes — can be fatal. If your dog ingests any of these, call ASPCA Poison Control (888-426-4435) immediately.

The Most Dangerous — Act Immediately

  • Xylitol — found in sugar-free peanut butter, gum, some yogurts, baked goods. Causes rapid blood sugar crash and liver failure. Symptoms within 30 minutes.
  • Grapes and raisins — cause acute kidney failure. The toxic mechanism is unknown, making even small amounts dangerous. No safe dose established.
  • Onion and garlic — all forms (raw, cooked, powdered). Destroy red blood cells causing hemolytic anemia. Cumulative toxicity with repeated small doses.

Seriously Harmful

  • Chocolate — theobromine toxicity. Dark chocolate and baking chocolate most dangerous.
  • Macadamia nuts — weakness, vomiting, tremors within 12 hours
  • Alcohol — even small amounts cause serious toxicity in dogs
  • Avocado — persin causes vomiting and diarrhea; the pit is a choking and blockage hazard
  • Cooked bones — splinter into shards that perforate the digestive tract

Safe Lick Mat Reminder

When loading your lick mat — always verify xylitol-free peanut butter. Check labels every time, even for brands you've used before.

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