Write an explanatory article about turtles (not less than 350 words)

In my world, there is such a small, lovely little guy. Guess who it is? It is my lovely little turtle-Diandian.

It has a pair of bright small eyes and "three nostrils". Why? Because, ah, there is a small point between the two small nostrils of Diandian, so it seems to have three nostrils. How's it going? Novelty, right? But the strangest thing is its head: on land, its head is purple, and it gradually disappears when it reaches the water, so I think this spot must be unusual.

Every morning, as long as I come to him and knock on the cylinder, he will suddenly wake up from sleep. When he saw his master coming, he quickly put his head out and swam like a runaway wild horse, and then kept turning around. You will definitely ask, "What is this?" In fact, this is a sign of hunger.

When you put a turtle food in front of its head, it will stare at it intently and intently, and then swallow it at lightning speed without its knowledge. It's really gratifying, so watching some delicious food is also a good enjoyment.

At night, it will exercise before going to bed: crawling around, and when tired, it will lie on a big stone in the water and start to sleep.

This is my place, a lovely little turtle!