Why does my dog chase his tail?
Dogs chase and sometimes bite their tails for either behavioral or medical reasons. Behavioral issues usually stem from boredom or obsessive tendencies. A long wagging tail is a temptation easily within reach. Restless dogs that get bored need the stimulation of exercise or other activities to distract them.
The most common medical reasons for chasing and biting the tail includes fleas, a skin infection or impacted anal glands. Biting at the tail usually warrants a veterinary visit to determine if medical attention is required.
Also, some dogs are simply more prone to tail chasing than others. Do not reward this behavior by giving attention to your dog. Instead, pick up a ball and otherwise engage your dog so tail chasing won’t develop into tail biting.