Why is my dog biting my other dog?
Keeping this in view, how do I stop my dog from biting my other dog?
If you don't happen to have the toy handy, stop moving when she bites and then, when she releases on her own, offer her the toy or a treat, and praise. The idea is to teach your dog that good things happen when bad behavior stops. Mouthing and nipping are natural behaviors for puppies but unwanted in dogs.
Consequently, why do dogs bite each other?
The Root of the Behavior Mouthing mimics an actual fight, but without the serious biting. This soft biting allows dogs to practice fighting without causing harm to each other. They will mouth at each other's face and neck when fighting, sometimes while standing or on the ground.
Inter-dog aggression occurs when a dog is overly aggressive towards dogs in the same household or unfamiliar dogs. This behavior is often considered normal, but some dogs can become excessively aggressive due to learning and genetic factors. Inter-dog aggression occurs much more frequently in non-neutered male dogs.