Your right its the arse alright? couldnt get a decent photo. the stomach seems awful bloated. Any idea what it could be?
Its usually something you see in ferret that have had the runs , generally loose stools , what are you feeding ?
Personally if the ferret is just not right, ie not playing , eating , drinking etc then i would go to the vets with it
If its ok other than the prolapse & behaving normally i would just watch closely for the next few hours or so , it could simply be a chnage in diet thats perhaps given it the runs a little bit , go with your gut reaction if you thi