How to distinguish male and female local dog puppies

Look at the characteristics of the genitals, the female dog’s genitals are not obvious and hairless, closer to the anus, the male dog’s genitals are obvious, can be touched and seen, far from the anus. You can also observe the dog’s defecation posture, female dog urine is squatting, male dog urine is lifting a leg. And female dog breasts are more developed than male dogs, and evenly distributed.