The method of the male and female giant tortoises is to compare the body shape of the male and female giant tortoises, the distance between the tail and the cloaca hole from the back of the ventral carapace.

The belly of both female and male giant tortoises is flat. Judging from the body shape of the Malaysian giant tortoise, the male Malaysian giant tortoise is longer, and the female Malaysian giant tortoise is wide and short. Judging from the tail of the Malaysian giant tortoise, the male Malaysian giant tortoise has a wide and long tail, and the female Malaysian giant tortoise has a thin and short tail. Judging from the distance between the cloacal opening of the giant tortoise and the back of the ventral carapace, the cloacal opening of the male giant tortoise is farther from the rear edge of the carapace, and the cloacal opening of the female giant tortoise is closer to the rear edge of the carapace.