Dear Iain, My name is Mojo, and I had a swollen behind after I came home with Kim and Scott from the ferret farm. I was only 8 weeks old and was so small that I couldn't hold my rear up from the litter when I went to the bathroom. It was red and swollen to begin with, and when I pooped litter stuck to the sore part, and made it worse. Scott bought me some soft wood shavings for the litter box while I healed. My big brother Oakey wasn't so happy about the fluffy litter, but it was only temporary. They also called the ferret farm and asked for advice on how to make me better. The ferret farm told them to dab Preparation H on the swollen area after I used the litter pan. Of course, they made sure the area was clean and dry first. They held me for a bit to make sure that it had a chance to work before I tried to wipe my butt on the ground. It smelled so bad that I didn't try to clean it off myself. The Preparation H made my butt pink again, and after a couple days it wasn't swollen anymore. My butt has been better ever since... Mojo Note from Kim: I didn't run this past a vet first but it worked really well for us, and was an inexpensive solution. I'm not sure it your ferret has the same thing Mojo had, but it may provide some relief! Good luck! [Posted in FML issue 1125]