What is wrong with my cats?

I have 13 cats. Two of my male cates ages 2 and 3 are having an ...issue. "A" lets devinci nurse on him....they are both male and tend to stick together away from my other cats......is this normal? ( I didnt think it was) also is it okay to let continue or is it something i should try to put a stop to some how?

This could be a comfort issue with your animals. Possibly the nursing cat was weaned too early? I have had dogs and cats (at the same time and different times) and my dog would on occassion let the cats nurse on her even though she was sterile and had not produced milk for nearly 4 years. Cats and dogs will do strange things. My female dog aslo hikes her leg and urinates like a male dog. Not all the time just sometimes but this doesn't mean anything is wierd with her. Just let the cats be cats and do what they want (within reason lol).

You are thinking that your cats are gay? "All cats are GAY in the dark".

That is strange? Mine did the same but with a female cat that was not their mother. (around 1 or 2 years old) My cats grew out of it though. I don't see any harm in letting them nip on each other. Maybe the one that nips is just trying to please himself and the one that is getting nipped finds it soothing. I wouldn't stop them unless you find damage to 'A''s nipples. And yes cats do play favorites with each other. I had 9 cats at one time and they had "clicks" amongst themselves :)

that is alot of kitties.... you will probably be on animal cops in a couple of years...