I am just curious about going from a med. rat to a small rat for feeding. She eats the med. just fine, but she is really growing fast and is very thick. Since they lead a very sedintary life, I dont want to overfeed her. I feed a med. rat every week. I was thinking of changing to a small rat every week, so she doesn't get too fat. I am just looking for thoughts, ideas or concerns on switching.

TIA

Todd