Dogs biting their tails and turning in circles may be due to these several reasons: some dogs will turn in circles before defecating, dogs with parasitic brain infections, neurological symptoms caused by encephalitis, dogs may turn in circles when excited and excited, tail-chasing behavior. It is recommended that the owner observe the behavior of the dog, and if there are other abnormalities, it is necessary to take the dog to the vet for examination in a timely manner. Dogs will chase their tails when they are bored and feel curious, sometimes they will see dogs that were originally curled up in a ball will suddenly chase their tails and play.
