Even that I like to take care cute little animals and I had cats for many years I never had a dog. Never until now. So as a new and inexperienced dog owner I have some questions and I seek for your experience and knowledge to help me. 1. First of all I am wondering in what breed my dog belongs. I have attached some pictures of him that may help you. 2. Although he seems like a little harmless puppy he is a bite-maniac. He wants to bite everything. Branches, trees, grass, walls, door, bones, garbage, cats even me I am in his menu. For the most things that I had refer above I don’t really care if he bites them or not. My only concern is me and the cats. I can repel him but the cats don’t. He isn’t aggressive against the cats instead they sleep together and eat together but they can’t play together. When the dog is in playful mood he chase the cats to bite them. Many times grabs them from the neck and he don’t leave them even if they shout painfully. I am afraid that he will accidentally struggle them. What I could do to stop this behavior?