There is a reason why dogs like to bite things. When they are puppies, they are full of curiosity about the things around them and treat objects as playmates. They lie down with their forelimbs forward, which is an invitation gesture. Secondly, at 3 to 6 months after birth, when the deciduous teeth are about to transform into permanent teeth, puppies especially like to bite things, and their gums become itchy, resulting in a physiological desire. The third point is that a puppy with strong growth potential has too much energy and nowhere to use it, especially a puppy in the growing period. In addition to the methods of strong punishment and spanking, you should also review:

(1) After entering the house, restrict it from playing in the kennel and sports ground.

(2) Choose toys for it to play with, such as commercially available fake bones made of cowhide, hard balls, or things that are no longer used (dolls, shoes, etc.).

(3) Increase walking time and amount of exercise outside.

(4) During this biting time, put movable objects up or put them away. A puppy that has no biting habit at all is either sick or has a bad temperament. As long as it is good at stopping biting, it can still be taught. At the same time, transfer its abundant energy to training, and it will be beneficial. You can try it.