I have had a Male Mali Uro for about 3.5 years now. He is a little over 10in. and very fat and healthy. I recently got a female mali over a month ago. Just last week I put both of them together and my male tried to bite her on her back legs and mount her. Is this a sign of mating or dominance? I only ask because he is only 10 inches long and the female is just about the same.