My Dog Is Biting His Tail Raw. Took to vet.found no worms or anything else after annal test. If your dog has been outside in a wooded area or around other animals recently, they might be at risk.
A harmed hindquarter can result in biting or chewing his tail to ease discomfort. There is also a case of the fractured tailbone, which bites his tail. If your dog is incessantly biting his tail, he may have some type of parasite infestation, according to dogster.
