Why wont my cat play with others?

Question

I have a male cat, around the age of 1 and a half. He stays under the shed all the time, he only comes out to eat. If hes eating and you go near him he runs, or if my other cat goes over he runs. It just started maybe 2 months ago, what should I do?

Answer 1

is he neutered? maybe hes going through puberty or something (do animals do that?)  

Answer 2

I may be wrong, but to me it sounds like he's scared.  Why don't you make him an indoor kitty?  I think he'll be happier and will begin to calm down.