These can become impacted or infected. If they do, the pet will often lick the area to try to relieve the pressure in the glands. Reproductive disease or discharges Female dogs will often lick the vulvar area when they are in heat .
Some female animals develop vaginitis which can cause severe itching.
Fleas Fleas often bite or are found at the base of the tail - where the tail attaches to the body. Dogs with fleas may lick or chew at that site. Parasites On occasion, a dog will lick the anal area if it has intestinal worms. However, most dogs with worms, do not show this behavior. Normal Grooming Dogs may lick under or around the tail as a normal grooming process.