Sometimes, when our dog friends are really bored, they will turn around and bite their tails to play and get our attention. Most of the time we respond with a smile, but if it happens repeatedly, it can be a sign of a behavioral disorder, a serious pain or wound, or a parasite. This tail grabbing and biting behavior, which is more common in our small breed friends, is normally not a problem. They may be exploring themselves and their limits. If our pet friend has been in a limited space for a long time, it may show tail grabbing and biting behavior because it is both bored and unable to release its potential energy. When it happens all the time, it can tell us that our dog friend has pain. If your dog friend, whom you do not understand at first glance and whom you constantly play with and take out, repeats this behavior in such a way that it is a behavioral disorder, there may be a need to go to a vet. There may be fleas in the tail area, fungal infections, allergic internal rashes, and sometimes anal gland pain that we cannot understand. If their spine hurts or they have pain in their intestines, the fact that they try to lie on their back is a sign of this. They may be grumpy and stressed or in pain, which is why they may show this tail grabbing or biting behavior.