Hello UT.

Sorry I'm just now getting to this post.

I'm not a vet nor vet tech, so I'll be drawing on my experience to try and answer this.

It appears to me that this little one might have some kind of infection.

How is he doing and has the vet found anything that might indicate what the problem is or was?

I would suggest having the ADV test run to see if that might be what your dealing with. Here is a link to the American Ferret Association's ADV page: http://www.ferret.org/read/aleutianarticle.html.

Hope this helps and please keep us posted on both ferrets condition.