Whether it hurts or not depends on the situation. The most common method of tail docking is to tie the part that needs to be cut off with a sterilized thin thread when the puppies are just a few weeks old. After a few weeks, the part that needs to be cut off will become necrotic and fall off naturally. The nerves of newborn puppies are not fully developed, so their tail docking will not hurt. But if the tail is docked on a dog that is more than one month old or has reached adulthood, it will be very painful.

Why dogs’ tails are docked:

1. The dog’s tail is too long and can easily be caught by the door or injured by sharp objects, which will be harmful to the dog. Dogs cause harm.

2. In order to keep the dog alert, cutting off the dog's tail will make them braver and avoid being bitten by the other party during the fight.

3. The number of some dog breeds is very small. Tail docking can increase the number of male and female breeds and expand the gene pool.