hi lisa, i to have a ferret that gets a swollen face from time to time. his face looks like a great big strawberry which usually also accompanies projectile vomiting and diarrhea. i to couldn't figure out why this would happen, leaving it to be possibly some sort of allergic reaction. the best i can figure my little ferret is allergic to aresol sprays and nail polish. it seemed to be an hour or so after either of these that an allergic reaction would take place but not every time, go figure? now that we are aware of this and that those are possibly why, it hasn't happened in quite some time. he usually needed dyphenhydramine to help with the swelling and cemetidine for the vomiting. maybe your little guy is allergic to these things too...hope this helps some:.) melissa & 11 ferrets [Posted in FML issue 2610]