Can dogs eat chocolate?

Dogs cannot eat chocolate. Chocolate is processed from cocoa beans and contains a variety of methylxanthine derivatives, including caffeine and theobromine. These substances bind to certain receptors on the cell surface, thereby preventing natural substances in the animal's body from binding to the receptors. It can cause diarrhea and vomiting in dogs. In severe cases, it can cause muscle spasms and even shock.

After taking theobromine and caffeine, the dog's heart rate will suddenly increase to more than twice the normal rate, and some dogs will run around wildly, as if they had drunk a large cup of strong coffee.