Quote Originally Posted by xdeus
Also, Balls tend to prefer mice over rats, so you might have a hard time going back to rats after he's had a taste of a few mice.

I had never heard this before. I've offered a random rat to different girls in my collection, as I currently feed only mice (with 100 gram weight gains each month on some of these girls with just 2 med mice a week) - but plan to start breeding rats soon. Each one I've offered a rat to so far took it with no hesitation. I was expecting some resistence - but my girls don't seem to care. If it's warm and furry - it's fair game! LOL