I'm starting to feel like being hungry is the only possible reason left... Which is weird, because a jumbo mouse is actually still large enough to leave a very slight lump in him, so I never thought it was the reason. But maybe he just needs an even bigger lump.
I guess we will see... Ugh.
Also, would it be easier to convert to rats by feeding live rats, and then converting back to F/T rats? Or just stick to trying to feed F/T rats?
He had a hard enough time converting to F/T mice, pretty much. I need to very thoroughly heat and scent the F/T mouse with fresh poopy mouse aspen every week still, or he will show zero interest.