The reasons why dogs cut off their tails:

1. Easy to take care of. Most of them are raised at home, and their tails are cut off to avoid unnecessary trouble and for hygiene reasons.

2. More beautiful. Some dogs will look cuter and more beautiful after their tails are docked, which will be more in line with people's aesthetics and make people like them more.

3. Hide emotions. The reason why some breeds of dogs have their tails docked is to hide some of their psychological emotions and confuse their enemies during a fight.

4. Work needs. Dogs also have many social roles. If their tail is too long and they cannot avoid it in time, they may get caught in the door or scratched by other things.

5. Good for health. For some small dogs, if the tail is left too long, it will put a lot of burden on the bones of the body and easily break.

Methods to dock a dog’s tail:

1. Valve core tail docking method. Cut the valve core into small sections of 2~3 mm, and put the cut valve core into small sections at the broken tail so that there is no blood circulation in the dog's tail.

2. Thin cotton thread tail cutting method. Use a piece of strong thin cotton thread of about 20 centimeters and repeatedly wrap it around the broken tail about 20 times to prevent blood circulation in the dog's tail.

3. Scissor tail cutting method. Use special electric scissors for tail docking with hemostatic function to directly cut off the dog's tail.