Wanted to switch my girl over to f/t rats from mice. She is 24" and weighs 186g. I got a small rat that is the same circumference (I actually measured), but weighs 60g. I'm guessing it would be a bad idea to feed it to her, but thought I would seek advice. She currently eats 3 mice every 4 days that weigh about 13-15g each. Thoughts?