Look at the abdominal pattern, dense is male, sparse is female, this is the Brazilian tortoise differentiation method.
Books say that the male and female Brazilian turtles are very easy to identify. The difference between male and female individuals is huge, female tortoises are large, male tortoises are small; male tortoises have very long claws on the forelimbs, female tortoises do not have this feature; female tortoises have a slightly shorter tail, male tortoises have a long tail.
Turtle keepers say:
Raise him a bit
About seven to eight centimeters in diameter
If he is a male
His nails will become very long
About one to one and a half centimeters
That's the second sex characteristic of a male tortoise.
The pattern is different for males and females
Look at the pattern of the carapace
The more complex and denser pattern is for females
The more sparse pattern is for males
Others say to look at the tail (pointy is for females, staccato is for males)
Or look at the anus
Anus on the inside of the carapace is for males
Outside of the shell is for females
This is a good way to tell if you're a male, or a female.
You research it!
Generally, the more rounded body is female, the more elongated is male. A flat underside is female, concave is male. Short tails are females and long tails are males. Did you know that turtles mate in a male-on-female position, and in order to avoid slipping off the female's shell during mating, the male's plastron is slightly concave, just enough to catch on the female's protruding dorsal carapace; but the female doesn't need this construction, and so the plastron is flat. You can quickly tell the difference between male and female by turning the turtle over and touching the extent of the plastron with your finger. Male turtles have a sparse pattern on the belly, while females have a dense pattern on the belly. Female turtles: dorsal carapace is shorter and wider, ventral carapace is flat with no depression in the center, tail is thin and short, tail base is thin, cloaca is closer to the rear edge of the ventral carapace, the notch formed by two anal shields on the ventral carapace is shallow, and the notch is at a larger angle. Male tortoises: dorsal carapace is longer and narrower, the center of the ventral carapace is slightly sunken inward, the tail is thick and long, the base of the tail is thick, the cloaca is farther away from the posterior edge of the ventral carapace, and the notch formed by the two anal shields of the ventral carapace is deeper, with a smaller angle of the notch. Note that male tortoises turn black after maturity, while females are still the original brown body color. Because the reproductive organs of tortoises are encased in their bodies and they look the same, it is difficult to tell their sex without some skill. But as long as you know the turtle mating position, you can tell the difference. Tortoises adopt the male-on-female position when mating. In order to avoid slipping off the female's shell during mating, the male's plastron is slightly concave, which is just enough to catch the female's protruding dorsal carapace; however, females don't need this kind of structure, and therefore the plastron is flat. By turning the turtle over and touching the amplitude of the plastron with your finger, you can quickly identify the male and female.
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