As much as we humans love it, chocolate contains caffeine, theobromine, or theophylline, which can adversely affect a dog’s heart and nervous system. Because dogs metabolize their food differently, the ‘people’ food we eat isn’t necessarily good for them. In fact, last year the ASPCA’s Animal Poison Control Center handled 17,453 cases of pets poisoned by people food. Here’s a partial list of the culprits:

Alcohol

Avocados

Chocolate

Coffee grounds

Grapes and raisins

Gum or candy with xylitol

Human vitamin supplements

Macadamia nuts

Mushrooms

Onions and garlic (raw, cooked, powder)

Salt

Tea

Tobacco

Yeast dough

via Consumer Reports on Safety: People food that can poison your pet.