Dog Lose Hair On End Of Tail. Another cause of hair loss on the tail region is atopy or environmental/food allergies. Dog losing hair on tail and belly.
Or if your old dog has arthritis in the tail, broken tail, or a foreign body on its tail, it will respond to the pain by excessively chewing off his tail causing hair loss. The base of your dog’s tail is called a subcutaneous fat pad and is a canine disease. On the tail, the scabs can result in the loss of hair around that region, making the skin vulnerable to attack by other environmental pathogens.