Normally, dogs have only four hind claws. If a dog has five claws, it is atavism, because the wolf has five hind claws. This situation is common in all breeds of dogs. It is possible that this phenomenon is not unique to a certain breed of dog. Dogs with atavism have no other abnormalities, and parents can keep them with confidence.

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Cats and dogs will have atavism during the breeding process. This is a normal phenomenon. Parents do not need to worry about something going wrong with their dogs.