Not much effect. Generally speaking, dogs consuming a piece of Dove chocolate will not affect their health too much, but it is not recommended to give your dog chocolate. Chocolate contains ingredients such as theobromine and caffeine, which can stimulate the dog's central nervous system and heart, leading to symptoms of poisoning, such as vomiting, diarrhea, rapid heartbeat, shortness of breath, thirst, and irritability. If a dog eats a large amount of chocolate, it may lead to poisoning or even death. Therefore, if your dog accidentally eats a piece of Dove chocolate, it is recommended to closely observe your dog's symptoms and take your dog to the veterinarian immediately if any abnormal symptoms appear. At the same time, in order to protect the dog's health, it is recommended not to give the dog chocolate or other foods containing theobromine and caffeine.