So, I'm getting rather good at ferrets, having made a ferret cake and a ferret pinata in my day. At least they are a bit more shapely than guinea pigs.
This particular ferret did survive both having his bottom repeatedly squooshed by Simon, and the threat of getting popped down Tim's trousers.
Underside - pretty proud of that gusset, it runs all the way from his nose long his belly and right up to the tail (not to mention it is made of different colours so that is technically three gussets!)
I didn't get a successful picture of his face, so ... it was mostly ferret faced looking.