Rats can make great pets...they're smart & affectionate, even trainable. I had pet rats for some years before I ever got into snakes. Rats are also great for licking out "empty" peanut butter jars so they're easy to recycle.Only downside is they can catch our colds+, or carry other things that we can catch, but for c/b, the risk is mostly theirs. They enjoy tiny bits of most foods that we eat, so they're easy to treat (they do need a balanced diet though- don't feed them dog food, it's not balanced for rats like quality lab pellets are). His scent may come in handy too, to get your snake(s) to eat.