That's the vibe I've gotten. I wish he had been started on rats, but the stores around me jump from large mice to medium rats. The med rats are a bit too big at this point, but that's why I'm glad I got a response about rat breeders around the northern VA region (gotta love this site). I'm pumped about the nutrition value of rats, because my guy is pretty good sized already. I'll be sure to post about his (her?) progress once the switch is made. I'm hoping my BP doesn't flinch at the change. Fingers crossed!