I think he's a bit skinny

[Joci]

Definitely on the thin size considering the age and weight (it basically hatching weight), nothing a little heavy feeding will not solve, weanling mouse every 5 days should do the trick, if not in other words if the animal eats adequately but does not put on weight have a fecal done.

Thanks Deborah. Are 7-11 gram mice considered weanling? That is the weight-range of the mice that I'm feeding him at the moment, starting from the smallest ones.