Close-shell turtle
Not all closed-shell turtles are semi-aquatic turtles. Also called dry box turtle. They are different from other turtle species. What is special is that they have three ligaments, which can shrink the head, feet and tail into the shell, and then seal them up, leaving only the smooth shell.
What is a closed-shell turtle? As the name suggests, the turtle's plastron can be closed, and the turtle's forelimbs can be fully retracted into the turtle shell. This is a very perfect self-protection method that makes the enemy unable to attack. It's strange, isn't it? Because there is a clear "tough" at the front of the plastron of the closed-shell turtle, which acts as a joint, the two armor plates can move, open or close.
There are only 7 real turtles: the Anbu turtle (Malaysian turtle), which comes from Southeast Asia, and the golden-headed turtle Turtles, three-line turtles, Baise turtles, Pan's turtles, Zhou's turtles and Yunnan turtles, they come from China. It might as well be said to be a treasure book of China. But for the time being, Zhou can already see Baise, except for the ones in the hands of different players.
Specially speaking, there is also a type of tortoise that can close its shell, called a spider web. The spider web has a strand to close the shell. However, not all species of spider webs can close the shell. Some have poor ductility and cannot be closed.
The yellow edge and yellow forehead raised by humans are also in the state of losing their shells. Due to growing too fast. There may be other reasons, so it still needs to be raised scientifically and soundly.
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