Hi can anybody help me, i have two british bullies. One is a 6 month old boy which i have had since he was 8 wk, and the other is 3 yr old. i got the 3yr old last wk. The problem is that they keep fighting with each other. None have cried or drawn blood but i don't know whether its normal. My 3 yr old is very obediant and tollerent but small in size and my younger dog is very big for his age. could this be a power struggle between them? I'm pulling my hair out