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Latin scientific name Siamese crocodile

English name Siamese crocodile

Family and genus classification fauna, Chordata, Vertebrate, Crocodile, Crocodile → belonging to three families: Alligator, Crocodile, Crocodile.

Edit this paragraph to introduce:

Crocodiles are the general name for all reptiles. It is usually a huge and heavy amphibian. It is a carnivore and looks like a lizard. The upper jaw is strong, with many tapered teeth, short legs, claws and webbed toes. The tail is long and thick with scales. At present, there are about 20 recognized crocodile species.

This group has attracted special attention because of its position in evolutionary history: crocodiles are the last link between living creatures and prehistoric dinosaurs-like reptiles. At the same time, crocodiles are close relatives of birds. Found a large number of crocodile fossils; Three of the four suborders are extinct. According to these extensive fossil records, it is possible to establish a clear relationship between crocodiles and other vertebrates.

Edit the shape characteristics of this paragraph.

Crocodiles refer to crocodiles widely distributed all over the world. The representative crocodile, Crocodile Bay, is 6 meters long and weighs about 1 ton. Crocodiles are 1 crocodile. Also known as Gulf Crocodile or Marine Crocodile. Distributed in Southeast Asia to the northern coast of Australia. The total length is 6-7 meters, and the longest is 10 meter, which is the largest reptile in existence. Nile crocodiles live across the bay or the ocean. Crocodiles are the earliest and most primitive reptiles found so far. It evolved from Triassic to Cretaceous (about 200 million years ago) and is still a semi-aquatic fierce reptile. It is a contemporary animal with dinosaurs. The extinction of dinosaurs is already a fossil, whether it is environmental impact or its own reasons. The existence of crocodile proves the strength of its life.

Crocodiles are not fish, but vertebrate reptiles, the only surviving offspring of Zulong. It can swim in the water, climb when it goes ashore, is fat and powerful, so it is called "the king of reptiles". It breathes through the lungs. Because of the structure of amino acid chain in the body, it has strong oxygen supply and storage capacity, so it has the characteristics of long life. The average life span of crocodiles is as high as 150 years, which is the longest among reptiles. The average life span of a tortoise is 152, which is the longest.

Archaeological findings show that crocodiles are about 12 meters long and weigh about 10 tons, but most crocodiles are about 6 meters long and weigh about 1 ton on average. They mainly feed on fish, waterfowl, rabbits and frogs and belong to carnivores.

Edit the distribution scope of this paragraph

Crocodiles are vertebrate amphibians and reptiles, which are distributed in tropical to subtropical rivers, lakes and coasts. There are many families and genera of crocodiles, and there are more than 20 kinds of crocodiles in existence. Most of them are fierce and violent, like to eat small animals such as fish and frogs, and even kill people and animals.

Edit the living environment of this paragraph.

They live in shallow water (at the intersection of a river bend and a bay). Crocodiles mostly live in rivers, lakes and watery swamps in tropical and subtropical regions, only a few live in temperate regions, and some live in shallows near the coast. It has a long face and a long mouth, and there is a saying that "the king of the world is not like a crocodile at all". Crocodiles are rich in ornamental value. Crocodiles also have many medicinal and health functions. Crocodiles are also valuable food. Because there are treasures everywhere, some countries in the world actively develop crocodile farming.

Edit the living habits of this paragraph.

Crocodiles are the only surviving Yi Long. As a cold-blooded egg-laying animal, it has not changed much for a long time, and it is the only predator and scavenger in water or land. It belongs to vertebrates, amphibians and reptiles. Most of them are fierce and violent, like to eat small animals such as fish and frogs, and even kill people and animals. According to records, there are more than 20 kinds of crocodiles in the world, among which the Chinese alligator, the Thai crocodile and the Luo Luo crocodile are all famous varieties. At present, the largest crocodile breeding base in China is Panyu Farm, covering an area of nearly 70 hectares, with Gulf crocodiles and Rollo crocodiles.

Lacrimal gland was first known in Han Dynasty, recorded in Tang and Song Dynasties, and occasionally found in coastal islands since Ming and Qing Dynasties. As the saying goes, "crocodile tears" are actually true. Crocodiles really shed tears, but that's not because they are sad, but because they are excreting excess salt in their bodies. . The excretory function of crocodile kidney is not perfect, and the excess salt in the body depends on a special salt gland to excrete. The salt glands of crocodiles are located near the eyes. Besides crocodiles, turtles, sea snakes, sea lizards and some seabirds also have similar salt glands. Salt glands enable these animals to remove excess salt from seawater and obtain fresh water. Therefore, salt glands are their natural "seawater desalinators".

Edit the section on growth and reproduction.

On the tree-lined hills near the Danshui River (more than 60,000 meters from the sea), they use their tails to sweep out a platform of 7-8 meters. There is a nest for crocodile eggs on the platform, with a diameter of 3 meters. The bird's nest is about 4 meters away from the river and is made of leaves. There are about 50 white hard-shell eggs in each nest, the size is about 80×55 mm; Female crocodiles wait by the nest, always wagging their tails and watering the nest, keeping the temperature at 30 ~ 33℃ and incubating for 75 ~ 90 days; The larval body length is 240mm, 1 year can reach 480mm, and it can reach 1 156mm in 3 years, weighing 5.2kg. ..

Crocodiles are fierce and unruly. Adult crocodiles are often underwater, with only their eyes and nose exposed. They have keen eyes and ears and will sink immediately when they are frightened. In the afternoon, I float in the sun, and at night, my eyes are bright. The little crocodile is red. Crocodiles mate for several hours from May to June, while fertilization only takes 1 ~ 2 minutes. Laying eggs in July and August. Male crocodiles monopolize the territory, driving away invaders, and a male leads a group of females. They often eat fish, frogs, shrimps and crabs, as well as crocodiles, turtles and turtles. Strong chewing ability, can break the hard armor.

Edit the population status of this section.

0 1. Indian fish-eating crocodile: endangered. There are still a certain number of farms in India, and there are few breeding records in zoos.

02. Malay crocodile: Malay crocodile is an endangered animal, which can successfully breed in farms in Thailand, Bronx Zoo in the United States and Miami Zoo.

03. Orinoco crocodiles: Orinoco crocodiles have never bred in zoos, but they can breed on some private farms.

04. Alligator: Alligator is the most widely distributed and abundant species in Alligator subfamily, but it is still an endangered species.

05. Cuban alligator: The Cuban alligator is an endangered species protected by government laws. It can breed in some zoos in the United States and farms in the United States and Cuba.

06. Moliere Crocodile: Although it is protected by law, Moliere Crocodile is still poached in large quantities and belongs to an endangered species. Crocodiles in Morelj have been successfully bred in some zoos.

Nile crocodiles: Some different populations of Nile crocodiles are listed as endangered, while others are listed as vulnerable.

08. African alligator: African alligator is an endangered species, which was successfully bred in Miami Zoo, USA.

09. Swamp Crocodiles: Swamp crocodiles are a fragile species and multiply in zoos in India.

10. Crocodiles in New Guinea: There are still a large number of crocodiles in New Guinea, which belong to vulnerable species and can be propagated in farms.

1 1. Crocodiles in the Philippines: Crocodiles are endangered species, with only about 100 in the wild.

12. Siamese crocodiles/Thai crocodiles: Thai crocodiles may be extinct in the wild, but there are still a large number of crocodiles raised artificially, which can cross with Gulf crocodiles.

13. Crocodiles: Although widely distributed, they are seriously threatened by crocodile skin trade and are listed as endangered species. At the same time, it is widely raised and can breed in many zoos and farms.

14. Australian freshwater crocodile/Qiang Sen crocodile: Although Australian freshwater crocodile is also threatened by poaching, it is strictly protected and belongs to a fragile species, and there are also a large number of farms.

15. African pygmy crocodile: it is listed as a moderately endangered or endangered species. Although it can be propagated under artificial breeding, no farm has been established.

16. Crocodiles in Mississippi: At present, the number of crocodiles in Mississippi has increased, and at the same time, there are a large number of artificial breeding, totaling one million, which is no longer a threatened species.

17. Chinese alligator: Chinese alligator is an endangered species. There are only a few hundred wild ones, but there are still many farmed ones. In addition to China, some zoos and farms, such as the Bronx Zoo in the United States, have also succeeded in breeding.

18. caiman: two subspecies of caiman are listed as endangered, while others are listed as vulnerable, which can be artificially propagated in many places. In Florida, some individuals originally introduced as pets can form small-scale populations in parks and even sewers after escaping.

19. Caiman: The habitat of Caiman is a densely populated area in South America, which is seriously threatened by human activities and belongs to an endangered species.

20. Paraguayan caiman: Some scholars believe that this species is a subspecies of caiman.

2 1. ancient alligator: the skin of ancient alligator is not suitable for use, so its existing number is still relatively large and it is not an endangered species.

22. Crocodiles: Like alligators, alligator skins are not suitable for use, so there are still a large number of crocodiles, which are not threatened species.

23. Black Caiman: Black Caiman is often killed by local people because it preys on livestock. Although protected by law, it is still an endangered species.

Edit the protection level of this paragraph.

Gulf Crocodile, Caiman Eyeglasses Crocodile, Nile Crocodile, African Crocodile, Philippine Crocodile, African Dwarf Crocodile, Chinese Crocodile, Caiman Crocodile and Black Crocodile are endangered species of wild animals and plants, which are internationally important protected species and listed in CITES (Convention on International Trade in Endangered Species of Wild Animals and Plants) and endangered species.

Edit this history

Crocodiles were recorded in ancient China, and they were called crocodiles in the Book of Rites. Later, Han Yu in the Tang Dynasty wrote "Sacrificing Crocodiles" because of the suffering of crocodiles, which was like an essay for thieves, and was righteous and stern, scaring off crocodiles. In Ming Dynasty, Li Shizhen listed crocodiles as medicinal in Compendium of Materia Medica "Scale-Crocodile-Solution: Dragon Map" and defined their medicinal properties as "Indication: heart disease" and "dampness causing disease", which undoubtedly explained the role of crocodiles in human life. In modern times, crocodile skins are used to make luxury goods to show their value.

In people's minds, crocodiles are "evil fish". When it comes to crocodiles, I immediately think of maw, dense and sharp teeth, hard armor and ready to eat people. It has keen vision and hearing, clumsy appearance, but very flexible movements. Crocodiles grow like this just to eat meat. All animals, including people, are its food. No matter how fierce an animal sees it, it can only take the initiative to avoid it and never dare to provoke it easily.

The late Cretaceous is an important period in the evolutionary history of mammals. At that time, many populations began to differentiate to adapt to different microenvironments. David kross said: "Crocodiles have become more and more diverse since the late Cretaceous, from 5 meters long to less than 1 meter to meet the needs of different living environments.

Establishing the relationship between extinct species and modern animals and plants is helpful to study the geographical structure of the past. In the past, a large number of fossils were found in the northern hemisphere. Before Madagascar was discovered, there were very few fossils in the southern hemisphere and Gondwana. According to the early theory of transcontinental species discovery in the southern hemisphere, there is a huge "bridge" between continents today. But now, scientists believe that Africa was first separated from Gondwana1650,000 years ago, while India-Pakistan subcontinent, Madagascar, South America and Antarctica were connected for a long time, so plants and animals were scattered everywhere.

Edit the brand with the same name in this paragraph.

Brand introduction:

Among the many clothing brands in the international market, the clothing embroidered with the first mouth of a crocodile on the left breast of the coat is the most eye-catching. Although expensive, it is quite popular. It is sold in 80 countries around the world and sells about 25 million sets (pieces) every year.

In the early 1930s, RENE· lacoste, a famous French tennis player, defeated the American player who dominated the world at that time in an international championship with perseverance and superb skills, and won the championship for France for the first time. LACOSTE's outstanding performance and success fascinated the French people with national worship.

Lacoste defeated his opponent with the indomitable spirit of "biting like a crocodile" on the court. People worshipped him and nicknamed him "crocodile". Lacoste is used to wearing "mesh-knitted" sportswear on the court, and those admirers also regard his clothing style as an imitation object.

1933, lacoste retired from sports. He regarded the public's worship of him as an opportunity to start a business, and decided to set up LACOSTE company to embroider the trademark "crocodile" on "mesh woven" sportswear for mass production and market. Before the product went on the market, he used photos of himself beating American tennis players to advertise. Due to the psychological influence of "eager for success" and "star worship", people rushed to buy this kind of clothing as soon as it came on the market.

Crocodile sportswear can be popular all over France, not all by crocodile's own fame. Knowing that "fame" can't last long, he decided to make a fuss about the product itself.

First of all, based on his long-term sports experience, he knows that the clothes worn by athletes must have strong sweat absorption ability, strong elasticity, softness and comfort, so that athletes do not feel bound in strenuous exercise. He consulted textile experts and engineers and decided to use the best cotton yarn to weave with the patented "double-thread and double-eye special knitting method". The whole production process is very scientific, and it will not be deformed and faded whether it is washed by hand or machine. This move makes the brand louder.

LACOSTE realized that the sales of a kind of clothing are extremely limited only by athletes. Since its establishment, the company has targeted many admirers. Before his enterprise was put into production on a large scale, he took the initiative to attack and send troops in all directions to do the business of eagle hunting dogs and bees. He extended sportswear to men, women and children and became the so-called "family portrait series". In sales tactics, we should adopt various channels to make the circulation of goods smooth, establish a wide domestic and foreign sales network, and form an all-round marketing strategy.