Thanks for the feedback. I've gone back down to mice, and there is still no interest, but I'll try the ASF in a week or so... I presume the pet stores have those readily available?
Rats were anywhere from 64 grams to 167 grams over time, and he was fine with them from the time he moved from mice to rats in July 2008, all the way through his last feed on 1/19/09.
- judiilana