I rescued a young ferret (about 2 months old) from an obscure pet store who had no business of keeping them. The conditions were terrible, one medium water bottle per 20 ferrets and they were all panting because it was upwards of 90 degrees. They were feeding them the Marshall mush which was probably over a day old by the looks of it, so I couldn't leave him in there. I took him home and he's a very active little guy the only problem is he whimpers quite a bit. And squeaks when he's lonely. (I have two other adult ferrets who have taken him in as a child it seems) I switched him to purina one heathy kitten formula which was recommended to me by my local ferret sanctuary, both of my ferrets eat with with no problem and have heathy bms, my new one on the other hand has very soft bms and occasionally whimpers when he goes. I want to assume it's his body adjusting to the high fat/protein diet change instead of the carb loaded food he was on. He's very active and playful all other times and sleeps just fine it's only when he relieves himself, anyone have any advice?