The first step is to introduce the tortoise! This is also a word that everyone often hears. Except for the meaning of swearing, it is a kind of reptile that looks like a small turtle, which refers to the turtle, a small animal of the family Trionychus. The back plate of an adult turtle is about 19-34cm, with a total width of 14-45.6cm, and its head shape is pointed and long, especially. It is soft leather skin, which is quite different from that of the little turtle. This is because the shell of the little turtle is firm, and the back plate of the tortoise also has folds, and there are also longitudinal edges composed of small clams, about 7 to 10 on each side.
The big difference between the two is the appearance. In the first step, the turtle's head is round, the turtle is thin and long, and it is also divided into freshwater turtles and turtles. There is another big difference between the little turtle and the turtle, that is, the opposite of the two. The little turtle has a solid hard shell. When it suffers external injury, it will retract its head, hands and feet into this hard shell, which can bring good protection function.
The turtle's head is not big, which is not as wide as the total width of the turtle shell 1/4. The front side of the head is smooth, and there are fine-grained scales at the back. The angle between the left and right odontoid bones of the lower jaw is less than 90 degrees, and its turtle back is relatively flat, with three longitudinal ribs. Its hands and feet are also relatively flat, the turtle back is dark brown, the abdominal armor is yellow-brown, and the male is generally black and smelly.
The natural environment suitable for the growth and development of small turtles is more open than that of tortoise. Small turtles can grow and develop in fresh water and sea areas, and their life span is longer. Inland rivers and lakes, reservoirs and ponds can live. They often hide in the water during the day, and in hot days, they will go out to find a cool place to escape the heat. Groups of them will play together without killing each other, and the food they eat is also very rich. Many insects, small fish, shrimps and seeds of weeds all eat both.