Thanks
I have checked his ribs, they don't seem flat, he isn't very active, I will not breed from him.
Tell me apart from, kinky tails, and flat backs, clear eyes, big ears what else should I be looking for when buying a new mouse.And how do you tell it's fine in a very short space of time?
It is jolly tricky when you visit a breeder (5 hrs from home, that's local) and your trusting they have your (and your future mice's best interest at heart).
Thanks people, I wish I had helpful breeders like you lot around the corner

, not the other side of the planet.