This should probably be in the health section, but nobody ever replies to my posts there

Does anyone know the healthy amount of extra skin a rat should have?

Icarus has so much loose skin the just hangs off him lol...I swear, if he were a hairless rat, he would probably be just the funniest looking thing you ever did see

I can't find a ruler now, but the last time I measured I think he had almost 5 centimetres of loose skin

Any opinions???