Anyone who can give me some advice on what to do I would extremely grateful. So me and my bf adopted a cat tonight that we had brought into the pound because he had been hanging outside my house when It was very cold but wanted to make sure he didn't have an owner. He seemed very sweet and friendly but tonight when I got him home I separated him from my other animals and I was just giving him some toys and he jumped up and bite my arm and left puncture wounds out of now where. He was rubbing on me and trying to get me to touch him before that I have no idea what happened or what I did wrong to provoke him I'm nervous to go back in there as I don't know what set him off. Any help would be appreciated