1. In terms of body size, females are generally wider and rounder, while males are thinner. From the point of view of the abdominal carapace, due to the needs of reproduction, the abdomen of male A. tortoises has a depression, while the abdomen of females is relatively flat.

2. Judging from the tail, the male horse has closed shell The tail of the turtle is a bit thicker and shorter than that of the female Mare box turtle. From the perspective of the cloaca, the cloaca of the male box turtle is far from the abdominal carapace, and the shape is slender. The female Mara terrapin is closer to the abdominal carapace and has a round shape.