Bathroom box bugs

Does my dog have a ringworm? - ringworm dogs pictures

She bites his tail, and has created a bald spot. It seems very dry and pink and looked very angry. I plan to go to the vet, but I wonder if this could be a moderator?

Here are the pictures of her.
http://s197.photobucket.com/albums/aa113 ...

http://s197.photobucket.com/albums/aa113 ...