Why do dogs like to chase their own tails

Playing status:

If the dog chases you in circles and bites its tail infrequently, let go after chasing you. Usually I just play with myself when I am bored. In addition, if you see the owner smiling or having a big reaction, you will think that the owner likes it, and it will become a habit. Generally speaking, dogs are more curious when they are young and are more likely to chase their tails and bite. This behavior is rare when they become adults.

Uncomfortable butt:

If a dog’s butt is uncomfortable, it is likely to bite its tail to rub the butt. However, there are several reasons why the dog’s butt is uncomfortable:
1. The dog’s daddy is not wiped clean. If poop is stuck on the anus, wipe it with pet wipes.
2. The dog’s anal glands are blocked. If this is the case, the owner can squeeze the anal glands and clean them. It should be noted that the anal glands should not be squeezed too frequently and should be cleaned regularly.
3. The anus is inflamed, red, swollen or injured. Check your dog’s anus. If it is red, swollen or has wounds, take your dog to the doctor immediately.
4. There are parasites on the butt. The owner needs to do regular deworming. If you are worried, you can pull back the dog's hair to see if there are parasite eggs or red spots, and see if the dog's poop is normal.

Obsessive-compulsive disorder:

Dogs can also suffer from obsessive-compulsive disorder. Biting the hair on their sides, following the wheels, chasing the rear of cars, etc. are all typical manifestations of obsessive-compulsive disorder in dogs (but Dogs with this kind of behavior are not 100% obsessive-compulsive disorder).
The main reason why dogs develop obsessive-compulsive disorder is because of previous experiences and the negative psychology they bring about.
If a dog is kept in a small space for a long time, abused, ignored for a long time, etc., there is a high probability of developing obsessive-compulsive disorder. In severe cases, they may even engage in self-mutilation.
So, if the owner feels that the dog bites its tail too frequently and has a tendency to self-mutilate, it is necessary to send the dog to the doctor and spend more time and energy to accompany them and care for them.