i'm a first-time ball python owner...I have a baby ball python, about 8-10 months old, i think.

Anyways, my ball python has never been aggressive or anything, I've always been able to hold him and he would be fine, really active, climbing all over me and stuff.

Anyways, For the past few weeks, when i try to hold him, hes beeing hissing alot. So i just haven't held him in a while. The only time I held him against his will is two times in the past few week, last week when I picked him up to put him in his feeding cage, and today when i put him in his feeding cage...

But i don't know whats wrong and why he keeps hissing like that. Is it for any reason?