1, which can be identified by reproductive organs.

2. Look at the dog's belly:

The organs are indistinguishable, and you can see the belly. A clean belly is a male dog. If the genitals are flat, a spotted belly is a female dog.

3, defecation posture:

After half a year, the male dog urinates by lifting one leg, while the female dog urinates by squatting, but not absolutely.