Is any amount of chocolate toxic to dogs and cats? Thankfully not! The toxic effects are dose-dependent. The smaller the pet and the more cocoa solids they had, the higher the risk.
From food to cleaning products, discover what household items are toxic to animal companions, signs of poisoning, and what to do if you think your dog or cat ingested something toxic.

The main ingredient of chocolate is cocoa. The cocoa bean contains two methylxanthines naturally occurring stimulants found in foodstuffs. These two toxic drugs are theobromine and caffeine, which are especially toxic to dogs, but also for cats and other animals.

Though rare, iron toxicity can lead to coma when large amounts are ingested. Disulfoton: Disulfoton is an insecticide sometimes added to granular rose fertilizers and is extremely dangerous for dogs and cats. One single teaspoon with 1% disulfoton can kill a 55-pound dog.
The dog chocolate toxicity calculator will tell you whether the amount of chocolate your dog ate might be dangerous for it.