QUESTION:
I have a 6 month old male. He is neutered and de-scented. He is a little furry ball of energy and as bad as a ferret can be. He seems completely healthy other than I have recently noticed a bald patch on his right front leg right around the knee area. I have seen him biting at it but not often enough to cause baldness. It looks like it is a patch of dry skin. I have been watching for excessive scratching and I only notice him scratching right before he goes to sleep and after he wakes up. And even then it s isn't a constant habit. It seems that there are small hairs forming in the bald area, but they disappear before they have a chance to completely grow in. Like I said other than that there is noting visibly wrong with him. He eats like a horse and beats both of the cats up as he sees fit. Is this something that I need to be worried about ?
 

ANSWER:
I am not sure, since I cannot see the problem.

Does he lay in a position against anything that could be causing him to rub off the hair?

I wonder if it might be 'ringworm', especially since you have cats. Sometimes they can pass it on without showing signs themselves. Also there may be the possibility that he may have brought it home with him from the petshop.

The other probable cause is mange.  Do you take him outside much? I would take him to the vet to have it checked just to be on the safe side, in case it is either one, as both will spread on his body, to the cats and to YOU!