Chocolate may be a favorite treat for humans, but for some animals it can be extremely dangerous. The reason is a natural compound found in cacao beans called theobromine. While our bodies can break it down easily, many animals process it much more slowly, allowing toxic levels to build up in their system.

The correct answer is C. Dog. Dogs are the most common victims of chocolate poisoning because they often eat whatever they find, and their bodies cannot remove theobromine quickly. Even a small amount of dark chocolate can cause symptoms like vomiting, diarrhea, rapid heartbeat, shaking, seizures, and in severe cases, death.

Interestingly, chocolate can also be harmful to other animals. Cats are actually very sensitive to theobromine, but they rarely eat chocolate because they cannot taste sweetness and usually avoid it. Horses are also at risk, as chocolate compounds can affect their heart and digestive system. Larger animals like cows are less likely to be affected by small amounts, but large quantities can still be dangerous.

If your dog accidentally eats chocolate, don’t wait. Check what type and how much they consumed, especially if it was dark chocolate or cocoa powder, and contact a veterinarian as soon as possible. The best solution is prevention—keep chocolate stored safely away from pets and give them treats made specifically for animals instead. A little caution can help keep your furry friends healthy and safe.