3 health related questions towards my rat zim

A- It looks like his bottom teeth are getting long. and I got rat-y chew toys in his cage but he doesnt use them.

what can I do?

B- He looks like hes gaining a lot of weight... now hes my fatty ratty.

im not over feeding him.

its just rat food from the pet store and some cheerios every now and again.

he gets exercise when ever he runs around my room.

C- he never pees on me... but always on my little sister... he peed on me when I first got him. and not once since... any advice as to whats going on?

I really need all 3 of these answered

A. I think you should take your rat to the vets about his teeth , I think thy clip them down but not 2 sure.

B. has he got a wheel that he can run around in?

C. becasue you handle your rat more than your sister (im just guessing about you handleing your rat more) he feels more relaxed and comfertable with you and not scared so he doesnt pee. when I used to have a rat I had him for 8 years wich is a pretty long time 4 a rat he sadly died he peed on me the 1st time I got him 2 lol all down my back!! haha

hope this helped xxx