There are more than 235 kinds of turtles belonging to 12 families in the world. At present, there are about 270 kinds of turtles in the world, including tortoises, freshwater turtles and sea turtles. All the turtles are classified under the order Turtles, and are divided into two suborders, namely, the diving necked turtle and the lateral necked turtle. Sneak necked turtles account for more than 76% of all turtle species, and most of their members can retract their heads into their nails; The side necked turtles, on the other hand, bend their head and neck to one side to make their head return to the nail.
The tortoise, in a broad sense, refers to the general name of the order Turtles, and in a narrow sense, refers to the species under the Tortoidae. The tortoise is also called the golden tortoise, the grass tortoise, the mud tortoise, the king eight and the mountain tortoise. In animal taxonomy, it belongs to Reptilia, Turtles and Turtles, and is one of the common Turtles.
