Dog biting hair off?

pixo

Thanks for replies. Vets the next stop

coinxoperated

You shouldn't ask for advice for something like this on a forum. Get your dog a muzzle and take him to the vets. It could be anything, your post isn't particularly informative, and regardless, you need to take him to the vets.

krlyr

Muzzle train him, maybe see if your vet will do some desensitization work, but I agree with a vet visit. Nibbling near the tail area can be a sign of anal gland problems but also other things too so impossible to say over the internet.
Chirag Patel does a fab video on introducing a muzzle
http://www.youtube.com/watch?v=1FABgZTFvHo

meames_2

womble get this occasionally, mainly in the summer, it usually requires antibiotics and some cream. Only really the vet could say the exact nature.