The approximate age of the tortoise can be seen from the color of its shell.

You can probably tell the age from the lines of tortoise shells. The darker the color, the clearer the grain and the older it is. On the contrary, it is tender. If it is the actual age, it is difficult to judge.

Identification method of turtle age. Look at the lines on the shell on the turtle's back, that is, the number of laps. There are circles on each shell, and the number of circles represents age. The more laps, the older you get. The calculation method of turtle's age is generally based on the number of concentric rings on the tortoise shell shield, and each ring represents a growth cycle, that is, one year.

The number of concentric rings on the shield, plus 1 (born one year after breaking the shell) is the age of the turtle. This method can only be more accurate if the concentric ring pattern of tortoise shell is clear. For an old turtle or a turtle with fuzzy concentric rings, only its approximate age can be estimated.

Basic knowledge:

With the periodic changes of nature, turtles have obvious growth period and hibernation period. In the growing period, the carapace grows like a body, forming a loose and wide concentric ring. During hibernation, the tortoise enters a dormant state and stops growing, and the carapace almost stops growing, forming a narrow and tight concentric ring.

Such dense concentric rings are similar to calculating the age of trees through their rings. When winter stops developing, annual rings will appear. According to this, we can judge the age of the turtle, that is, the number of concentric rings on the shield, plus 1 (rings after breaking the shell), which is equal to the actual age of the turtle.