Question for some of the more experienced people here. Introduced a f2 male into the house 2 months ago. He is 7 months old now. He has no aggresion torwards my f3 or f6 whatsover. Hangs out with my f6 female all night long. He's not socialized with people well but we are working on that and have been through it before and hes making great headway.we are not petting him yet but he likes to rub his nose on our hand. He's very large already and has a giant head.hahha. Anyway he hisses constantly. If you look at him he hisses. If you walk past him he hisses. He will walk right up to me Hiss then wait for me to stick my hand out to touch his nose to it. He will jump on the couch next to my head Hiss to get my attention then gently chew on my finger. He has never tried to bite or swat or anything agressive. My question is how normal is this? Should I even be concerned?