There are many animals in nature, so do you know what reptiles are?

There are 391 species of reptiles in China. Reptiles are salamanders, geckos, chameleons, etc.

There are so many animals in nature that greatly enrich and satisfy our biosphere and allow us to see so many life-like life forces. There are many types of animals, the two largest branches are vertebrates and invertebrates, among which vertebrates are subdivided into reptiles, birds, amphibians, fish and mammals, etc., and invertebrates are also subdivided into flattens, nematoses, molluscs, coelenterates and arthropods. But in general it's quite a lot.

We are mainly talking about reptiles among vertebrates, and the reptiles that exist in the world today are divided into four main groups.

The first type is lizards and has a purpose of linIt includes the earliest surviving reptile beaked lizard, as well as a variety of snake lizards with the order Linda, and of course, as we all know, lizards include chameleons and geckos.

The second species is the turtlesIt is also divided by scientists into amphibian reptiles such as turtles, soft-shelled turtles, turtles, and soft-shelled turtles. The last group is crocodiles, reptiles, which have the order crocodiles. It includes Chinese alligators, Siamese crocodiles, bay crocodiles, Nile crocodiles, etc.

Among them, snakes and crocodiles are the two most feared species, because one of them has a powerful venom that can easily poison its prey, and the other has a large body and powerful muscles, and it is difficult for the prey to escape once it is topped. Therefore, we should try to avoid dealing with them in life.

Of course, there are far more types of reptiles than these, and there are many animals in nature that have not been discoveredScientists have found that there are many species of reptiles in ancient times, such as ichthyosaurs, plesiosaurs, and coilosaurs, bipore, and other extinct animals, including dinosaurs. Dinosaurs are the most representative reptiles in ancient times, their bodies are huge and fast, and our crocodiles today are called dinosaurs in ancient times by the scientific community.

Reptiles are snakes, tortoises, lizards, geckos, crocodiles, etc. Reptiles are characterized by scales or plates on the surface of their bodies, which are typical of crawling when lococating.

The earliest reptiles were snakes, lizards, turtles, crocodiles, and other animals.

There are about 1.5 million species of animals in nature, with more than 46,900 species of vertebrates. It includes fish animals such as carp and yellow croaker, reptiles such as snakes and lizards, amphibians such as frogs and baby fish, as well as familiar birds and mammals. There are about 1.3 million species of invertebrates.

Scientists once estimated that there were 1.5 million biological species in the world, but with the deepening of scientific research, this number has risen to 30 million 50 million. Tropical rainforests are home to more than half of the world's species. At present, there are about 10 million defined and named organisms on Earth, yet many scholars estimate that there are still 10 million species in the world that have not been defined, named, or even discovered.

The animal kingdom is a large group that includes protozoa, sponges, coelenterates, flattens, nematozoa, annelids, molluscs, arthropods, echinoderms, and chordates, among others. As of 2005, there are more than 1.5 million known species of animals in all corners of the world. Animals generally cannot synthesize inorganic matter into organic matter, and can only feed on plants, animals or microorganisms.

Therefore, animals have different morphological structures and physiological functions from plants to carry out a series of life activities such as feeding, digestion, absorption, respiration, circulation, excretion, sensation, movement and reproduction. Animals and humans are very closely related. Livestock, poultry, fish and fur animals are important food for human beings and important raw materials for industry and medicine, some insects, ticks and mites and rodents harm agriculture and forestry, many lower animals are parasites of humans and other animals, and some animals can transmit diseases and endanger human beings and animal and plant health.

There are many species of animals in nature, about 1.5 million species.

Since the emergence of life, the earth has undergone a long evolutionary process of 3 billion to 4 billion years, and there are 20 million to 50 million species of living organisms, including more than 1.5 million species of animals. But this is only a tiny fraction of the living species that have ever lived on Earth.

Even these creatures we know very little, insects are the world's most diverse animals, there are more than 1 million species that have been named, 69,000 species are known in the world, there are about 150,000 species of insects in China, and only 34,000 species are known.

For example, it is estimated that there are 5,000 species of mammals, 4,181 species are known in the world, and 499 species are known in China. It is estimated that there are 11,000 species of birds, 8,974 of which are known in the world and 1,186 in China.

There are 6,300 known species of reptiles in the world and 376 species in China. There are 4010 known species of amphibians in the world and 376 species in China. It is estimated that there are 28,000 species of fish, 21,400 species known in the world and 2,804 species known in China.

Among these many kinds of animals, there are many species endemic to China, including 73 species of mammals, 99 species of birds, 26 species of reptiles, 30 species of amphibians, and 440 species of fish.

Due to the deterioration of the environment has reduced the number of individual species of some animal species, making these animals endangered species, at present, China's endangered species are: 94 species of mammals, 183 species of birds, 17 species of reptiles, the South China tiger is an endangered mammal, as of the beginning of 2009, there are 81 South China tigers in the world. There are 7 species of amphibians and 97 species of fish.

<> "5 Animals in Nature with Unusual Abilities.

The skeletal structure of a woodpecker.

The woodpecker's most famous feature is precisely the shape of the hood that gives it its name: its ability to drill wood with its beak. Every day, he works tirelessly and tries to "eat" the insects and eggs hidden in the bark of the tree. The average rate of 19 hectares per hour is ridiculous.

The woodpecker's body structure is designed so that it can withstand strong impacts, and woodpeckers have strong tail feathers and claws that help them maintain their balance when their heads peck at the trunk at a speed of 7 meters per second.

King cobra. Poisonous snakes use the venom of poisonous snakes Poisonous snakes will not be poisoned to death by the poison of poisonous snakes, in fact, some snakes are naturally immune to snake venom and cannot be generalized. A good example of this is the eyed king snake, which has natural enzymes that break down toxins emitted by other snakes.

With an average length of 3 meters, it kills its prey by winding, that is, by the "embrace" of the snake to disrupt the prey's body tissues and blood flow.

Why are roosters not deaf.

The rooster's crowing can be announced, and it can wake everyone in the village. The noise is also quite high: it can reach 100 decibels, which is the same noise volume as a chainsaw. It's hard to understand why the rooster sings every day and doesn't go deaf.

Scientists eventually discovered that roosters had a soft tissue on their skull that covered half of their eardrums. When the rooster tilts its head and crows, the fabric covers the entire ear space and acts as a natural cushion. In addition, these pheasant birds are able to regenerate the cells of the cochlea.

Fish with lungs. The lungfish has gills and lungs, which means that it absorbs oxygen from the air like a land animal. So this animal can survive the dry season without water.

In this case, the lungfish buries itself in the soil and squeezes the mud through its gills. They then stick their mouths out, breathe, and hide from predators. They can survive up to four years on the energy stored in their tails alone.

Black Widow. The black widow spider kills his mate after mating. Although not a very good wife, I have to say that she is a mother who is not partial.

Unlike most spiders, the Black Widow spider takes care of them, the Black Widow spider hatches half of its eggs randomly, and then the largest spider eats the smallest spider.

She does calculations on her eggs so that each hatches at the same size and with the same level of development. Therefore, no one will grow fatter than the other, and every egg has a chance to survive.

No one knows how many species of animals live in the world today, only an approximate number.

According to zoologists, there are about 1.5 million known species of animals on Earth. According to taxonomists, this number still does not reach the actual number of species.

Among the animals that have been discovered in the world, there are 20 orders of mammals with 4140 species; There are 150,000 species of aquatic animals, including 20,000 species of fish, 30,000 species of crustaceans and 100,000 species of molluscs. There are 10,000 insects in the world, and there are hundreds of thousands of species that have not been named, and it is the largest animal group, with more than 1,000 species newly recorded in the world every year. There are more than 2,000 species of amphibians, such as frogs. There are more than 3,000 species of reptiles, such as snakes, turtles, crocodiles, etc.

There are 9,000 species of birds.

Some zoologists speculate that there may be 2 million species of insects in nature that are not well known.

There are about 1.5 million species of animals in nature.

Mammals, carnivores, birds, amphibians, nocturnal animals, reptiles, microorganisms, peristalsis, etc.