How to distinguish male and female tortoises:

1. Body size: females are round, thick and large; males are thinner and smaller.    

2. Tail shape: The female Brinell's turtle has a thin and short tail with a thin tail base; the male Buchner's turtle has a thick and long tail and a thick tail.   

3. Forepaw nails: femaleBuchner's tortoiseshort; Male Bruce's turtlelong.

4. The location and shape of the cloaca: the cloaca of female B. chinensis is close to the rear edge of the plastron, and the cloaca is located inside the plastron, and the hole is circular; The cloaca of the male B. chinensis is far from the rear edge of the plastron, the cloaca is located outside the plastron, and the hole is elongated.