Essay on rare animals in our country, essay on animals

Sleeping patterns of seafloor animals.

Xiao Nuoqian is in class 13 of the third grade.

Sleep is a physiological phenomenon that eliminates fatigue and restores physical strength, and if you don't sleep, people or animals will face death. However, there are great differences between humans and animals, and between animals in terms of sleeping positions, sleep duration, etc. People sleep lying down, horses sleep standing up, and fish living in the ocean sleep in a more bizarre way.

Usually terrestrial animals sleep with their eyes closed, while most fish sleep with their eyes open without eyelids, but they also fan their gill covers slowly and rhythmically, and occasionally stroke their pectoral or caudal fins to keep their bodies balanced. When marine organisms sleep, they generally stop swimming and stay in a certain place, and the sleeping position of organisms in different water layers is also different. For example, flounder fish like to lie quietly on the bottom of the water when they are awake, but when they sleep, they will float on the surface of the water. The puffer fish lies quietly at the bottom of the water and slowly falls asleep; The humphead fish sleeps on the bottom of the water with its body facing upwards; During the day, young mullets, which like to play in groups on the surface of the water, disperse at night and dive to the bottom of the sea to sleep without disturbing each other. The "champion diver" sperm whale dives the deepest into the bottom of the sea at a depth of 2,200 meters, but they like to float on the surface of the sea and fall asleep with the waves when they sleep.

Some sea creatures also have strange sleeping habits: sea otters, after "dinner", like to seek out places with dense seaweed as comfortable couches. Before going to bed, it rolls several times in a row, wrapping the seaweed around its body, like covering it with a thick quilt, and sometimes grabbing the seaweed with its forelimbs to prevent it from being washed away by the waves in a sweet dream.

The dolphin sleeps for a very short time, and when it sleeps, it likes to open one eye and close the other, because its brain structure is very peculiar, when one half of the brain is asleep, the other half of the brain is still awake. The octopus likes to sit and sleep, its body is lifted upwards, and its eight soft feet are sucked on the bottom of the sea, two of which are stretched to the side and keep turning to avoid predators, as long as the sea water fluctuates, black spots will appear on its body. There is a parrot fish that has a more peculiar sleeping style, its ** secretes a lot of mucus at dusk, and its whole body is wrapped up, as if wearing a sleeping bag.

It also has a small opening at the front and back of the sleeping bag to breathe through seawater, so it can sleep peacefully. At dawn, parrotfish take off their sleeping bags and go out to feed.

Some fish hibernate in winter, which is also a form of sleep. Their hibernation is not the same as that of reptiles or mammals, they simply do not eat or drink and go into a semi-unconscious state. For example, in winter, carp will dive into the water in groups and form a circle, leaning on each other with their heads to hibernate.

[b] small squirrel [b].

Today, I happily came home to see two cute little squirrels. Their delicate little faces were trimmed with small round eyes and small triangular ears. They were all black, but had a few white stripes. One of them is named Qiqi and the other is Jingjing.

The little squirrels are fun when they eat, they always sit with their upper bodies and hold the food in their hands and bring it close to their mouths. When they eat corn, they eat it slowly with their hands and feet, and they eat only meat and not skins. And they eat a little here and there, which is really a portrayal of monkeys moving bread and grain.

It's even more fun when the little squirrels sleep, one of them lying like a puppy and the other rolling up like a little hedgehog. You walk over and make a little noise, and they'll wake up instantly. "They're so vigilant!

Isn't that little squirrel unable to sleep well? It's so pathetic! Mom always smiled faintly.

Soon after, because of my mistake, Jingjing quietly ran away. Only Kiki remained. He squatted there every day and ate very little, so he waited there.

I wish Jingjing could come back! "Do you know why Jingjing runs? Mom asked me with a smile.

Because of my carelessness. "It's wrong because Jingjing needs freedom and wants to be free. ”

After a few days, I gently pulled open the cage door. Kiki lingered for a while and then ran away. My mom came over to look at me, and I smiled and said, "Kiki needs freedom too." ”

On White Rabbit Saturday, my dad took me to the pet market, which was very lively.

Dad bought me a little white rabbit, its red eyes, three-petal mouth, a pair of long ears, and white fluffy fur, which I couldn't put down. I gave it water, and it trampled the basin over, and it was so cute.

I like my little white rabbit the most.

"Sheep, the Fetal Clothing of Mankind" (Cambridge).

Tianwen: Who Am I, Chapter 2 (Kunlun Publishing House).

On a sunny day, I did my homework for half a day, I was tired and had a sore back, and I wanted to go outside to breathe some fresh air I sneaked into the yard to play while my mother didn't see it.

In a large tank, I saw a spider, stopped, and looked at it curiously. Its body is black, its legs are long, and it is very spirited. When it saw me, it ran away, and I laughed.

If I wasn't careful, I couldn't find the spider. I said to myself, "See if I'm not looking for you."

Found it, in the corner of the tank. It was sliding around on the water, and I couldn't catch it. Suddenly, I wondered how it could move freely on the water.

I thought about it, but I couldn't think of an answer. I asked Mom and Dad, and they didn't know either.

I thought to myself, if it can walk on water, is it called a water spider? I read a book about reptiles, and I searched through them, and I found the page where the word "water spider" was written, and it said that it could indeed walk on water.

From this incident, I learned that in order to understand nature, it is not enough to just observe, but also to learn what is in books.

Woohoo! Woohoo! "What kind of animal is this calling? Right! It's a dog.

There are many kinds of dog personalities, some are honest and honest; Some are empathetic; Others are docile and cute. The dog has a pair of clever ears that fit on the head like a small radar. It has sharp eyes, a large mouth, sharp teeth, strong limbs, and a hairy tail.

When the dog sleeps, it is always on the alert, and when the thief comes, it stands up and yells at the thief to alert the owner that a thief has entered. After the thief left, it slowly lay down on its forelimbs, and then slowly squatted down on its hind limbs, and finally regained its composure.

Dogs and humans get along very happily, it is a good friend of humans, dogs run up and jump, sometimes like to hide in the grass, if at night, you take it out to play, it will not drive straight, but through the grass next to it, look here, look there, like a "pirate" who is looking for treasure. Once, I was out for a walk with Doudou, and suddenly, Doudou stopped running, and he started to hunt for treasure in the grass again, and after a while, he found a lot of treasure—a few bones, and ate them with relish.

The dog is the king of smell, and everyone must protect it.