Introduction of male and female identification methods of Brazilian tortoise

You can't tell the sex of a turtle until it is sexually mature.

Correct identification method: (not limited, applicable to all turtle species)

After the turtle is sexually mature, the sex of the turtle can be judged by the distance from the turtle's excretory hole (anus) to the turtle's tail nail. The female turtle's drain hole is close to the tail nail, while the male turtle's tail nail is far from the drain hole. You can recognize it at a glance.

Other identification methods: (limited)

1, identified by the depression of the abdominal nail. Generally, the male turtle is sunken in the abdominal shell, and the female turtle is flat in the abdominal shell. However, it is difficult to identify wild turtles in this way because the growth of tortoise shells is limited by the later feeding conditions.

2. Identification by size. Generally speaking, little turtles are male and big turtles are female. However, due to individual differences, it is difficult to judge the age and individual proportion of turtles, so it has great limitations.

3. Identify by the length of the tail. Generally, the tail of a male turtle is much longer than that of a female turtle, and the tail of a female turtle is short and wide. However, many kinds of turtles are short-tailed, and the tail of long-tailed turtles is easily bitten off by other turtles, so it has great limitations.

In addition, there are some;

Wrong identification method: (wrong method)

For example, according to the size of nails and head.

One is that male nails are longer than female nails (wrong), and the other is that male heads are bigger and more gorgeous than female heads (wrong).

First of all, turtles are reptiles, and there are bound to be nail wear in life, which is related to the living environment. Secondly, tortoise nails are horny, protein. Its growth is all affected by food, so it is wrong to identify it by the length of nails.

There is also the turtle's head is also affected by the acquired growth factors, the lack of food and flooding, and when the turtle grows up, there will be melanin precipitation in the body, and its body color will also turn black due to years of sun exposure. Therefore, the avatar will not be gorgeous, but will only become more and more dim. So this method is also wrong.