Dog breeding means choosing a suitable male dog to breed with a female dog, which means choosing a suitable spouse for the male dog. Let’s first understand the four principles of dog selection:

1. Try to combine the best: It is best for dog owners to choose male and female dogs with common advantages for mating. In this way, the advantages of the dogs can be maintained, consolidated and developed in the offspring; it is best not to mate if both male and female dogs have the same shortcomings. If they mate, the shortcomings of both parties will be more prominent.

2. You can mix the good with the bad: When there are not enough good breeding dogs, you can choose a dog with certain advantages and mate with another dog with corresponding shortcomings. Use your strengths to overcome your weaknesses. However, it should be noted that you cannot use a convex back to transform a concave back, and you cannot use "X" postures to correct "O" postures.

3. Age is important. In terms of age selection, it is ideal to match prime-age dogs to prime-age dogs, or old dogs (female dogs) to prime-age dogs (male dogs). Try to avoid old dogs to old dogs. Dogs that are over 5 years old and have never been bred before (virgin dogs) should not participate in breeding.

4. Pay attention to your body shape. Dog owners should also pay attention to the body shape of male and female dogs when choosing a pair. The size of both partners of the dog should be suitable, and one should not be too big and the other too small. This will prevent injuries during mating.