Crocodile

Latin scientific name Crocodylus siamensis

English name Siamese crocodile

Family and Genus Classification Animal Kingdom Fauna, Chordata, Vertebrae Animal subphylum Vertebrata, Reptile class Repitilia, Crocodylia → three subordinate families: Alligatoridae, Crocodylidae, and Gavialidae.

Edit this paragraph to introduce:

The collective name for all reptiles in the order Crocodilia. They are usually large, bulky amphibians, slightly similar in appearance to lizards, and are carnivores. The palate is strong and powerful, with many conical teeth. The legs are short, clawed, and webbed between the toes. The tail is long and thick, and the skin is thick and scaly. There are currently about 20 recognized species of crocodiles.

This group is of particular interest because of its place in evolutionary history: crocodiles are the last living link to the dinosaur-like reptiles of prehistoric times. At the same time, crocodiles are the closest living relatives of birds. A large number of fossils of various crocodiles have been discovered; 3 of the 4 suborders have become extinct. Based on this extensive fossil record, it is possible to establish clear relationships between crocodiles and other vertebrates.

Edit this paragraph's appearance characteristics

Crocodiles generally refer to animals of the Crocodylia class that are widely distributed around the world. The representative crocodile - Crocodile crocodile - has a maximum body length of 6 meters and a weight of about 1 ton. The crocodile is a species of the family Crocodileidae. Also known as Gulf crocodile or sea crocodile. Distributed from coastal Southeast Asia to northern Australia. With a total length of 6 to 7 meters and a maximum length of 10 meters, it is the largest reptile in existence. The Nile crocodile (Crocodilus niloticus) lives in the bay or across the sea. The crocodile is the earliest and most primitive reptile ever discovered alive. It evolved from amphibians in the Mesozoic Era from the Triassic to the Cretaceous (about 200 million years ago). It is still a semi-aquatic and ferocious reptile today. , it is an animal of the same era as the dinosaurs. Whether the extinction of the dinosaurs was caused by the environment or its own reasons, it has become a fossil; the existence of the crocodile proves the power of its life.

The crocodile is not a fish, but a vertebrate reptile. It is the only existing descendant of the ancestor dragon. It can swim in water, climb when landing, and is fat and strong. It is called the "King of Reptiles." It breathes with the lungs. Due to the structure of the amino acid chain in the body, it has a strong ability to supply and store oxygen, so it has the characteristics of longevity. Generally, the average lifespan of crocodiles is as high as 150 years, which is the longest lifespan among reptiles. (The average lifespan of turtles is 152, which is the longest)

According to archaeological findings, the largest crocodile is 12 meters long and weighs about 10 tons, but most species of crocodiles have an average length of about 6 meters and weigh about 1 ton. Mainly It feeds on fish, waterfowl, hares, frogs, etc. and is a carnivore.

Edit this paragraph Distribution range

Crocodiles are vertebrate amphibians and reptiles that are distributed in rivers, lakes, and coasts from tropical to subtropical regions. There are many crocodile genera, and there are more than 20 existing species of crocodiles. Most of them are ferocious and violent in temperament. They like to eat fish, frogs and other small animals, and even eat humans and livestock.

Edit this paragraph Living environment

Live in fresh water and sea water (at the intersection of rivers and bays). Except for a few living in temperate areas, most crocodiles live in the tropics Rivers, lakes and watery swamps in subtropical areas, and some also live in shoals near the coast. It has a long face and a long mouth. It is said that "the king of the world is nothing more than the crocodile". Crocodiles are of great ornamental value. Crocodile also has a variety of medicinal and health benefits. Crocodiles are also a valuable delicacy. Because of its treasures, some countries in the world are actively developing crocodile breeding industry.

Edit this paragraph's living habits

Crocodile (Crocodile) is the only surviving early dragon. It is a cold-blooded oviparous animal that has changed little over time. It is the only predator and scavenger in water or land.

They are vertebrate amphibians and reptiles. Most of them have ferocious and violent temperaments. They like to eat fish, frogs and other small animals, and even eat humans and animals. According to records, there are more than 20 species of crocodiles in the world. my country's alligator, Thailand's crocodile and crocodile are both well-known species. my country's largest crocodile breeding base is the Panyu Breeding Farm in Guangzhou, which covers an area of ??nearly 70 hectares and has crocodiles, crocodiles, alligators, and South American crocodiles. There are nearly 100,000 alligators and other crocodiles.

Crocodylians were first known to exist in the south during the Han Dynasty in China, and were recorded in the Tang and Song Dynasties. They have been occasionally seen on coastal islands since the Ming and Qing Dynasties. The saying "crocodile tears" is actually true. Crocodiles really shed tears, but that's not because they are sad, but because they are excreting excess salt from their bodies. . The excretion function of the crocodile kidneys is very imperfect, and excess salt in the body must be excreted by a special salt gland. Crocodiles have salt glands located right near their eyes. In addition to crocodiles, turtles, sea snakes, sea lizards and some seabirds also have similar salt glands. Salt glands allow these animals to remove excess salt from seawater to obtain fresh water. Therefore, salt glands are their natural "desalinators."

Edit this paragraph for growth and reproduction

They nest in the tree-lined hills beside the Tamsui River (more than 60,000 meters away from the sea). They use their tails to sweep out a 7 to 8 meter platform. , there is a 3-meter-diameter nest for crocodile eggs on the platform. The nest is about 4 meters away from the river and is made of shade from leaves. Each nest contains about 50 white hard-shelled eggs and is about 80 × 55 mm in size. The female crocodile is waiting on the On the side of the nest, flick the tail from time to time and sprinkle water to wet the nest, keep the temperature at 30-33°C, and hatch in 75-90 days. The baby crocodile is 240 mm long after hatching, can grow to 480 mm in 1 year, 1156 mm in 3 years, and weighs 5.2 kg.

Crocodiles are ferocious and untamed. Adult crocodiles are often underwater, with only their eyes and nose above the water. Their ears and eyes are very sensitive and they will sink immediately when frightened. In the afternoon, you can often float in the water and bask in the sun, and your eyesight will be bright at night. Young crocodiles are reddish. Crocodiles mate from May to June, lasting for several hours, and fertilization only takes 1 to 2 minutes; they lay eggs from July to August. Male crocodiles occupy the territory exclusively and fight off intruders. One male leads a group of females. They often eat fish, frogs, shrimps, and crabs, as well as small alligators, turtles, and soft-shell turtles. It has strong chewing power and can break hard armor.

Edit this paragraph's population status

01. Indian fish-eating crocodile: on the edge of extinction. There are still a certain number of them in breeding farms in India, but there are very few breeding records in zoos.

02. Malayan crocodile: Malayan crocodile is an endangered animal and can be successfully bred in farms in Thailand and the Bronx Zoo and Miami Zoo in the United States.

03. Orinoco crocodile: Orinoco crocodile has not been bred in zoos, but it can be bred in some private farms.

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

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

06. Morelei crocodile: Although the Morelei crocodile is protected by law, it is still widely poached and is an endangered species. Morellei crocodiles are currently breeding successfully in some zoos.

07. Nile crocodile: Some of the different populations of Nile crocodile are listed as endangered, while others are listed as vulnerable.

08. African Alligator: The African Alligator is an endangered species and has been successfully bred at the Miami Zoo in the United States.

09. Swamp crocodile: Swamp crocodile is a vulnerable species and breeds in large numbers in zoos in India.

10. New Guinea crocodile: New Guinea crocodile is currently in large numbers and is a vulnerable species that can be reproduced in farms.

11. Philippine crocodile: The Philippine crocodile is an endangered species, with only about a hundred individuals in the wild.

12. Siamese crocodile/Thai crocodile: Thai crocodile may have become extinct in the wild, but there are still many in captivity and can be hybridized with Gulf crocodiles.

13. Gulf crocodile: Although the Gulf crocodile is widely distributed, it is seriously threatened due to the impact of the crocodile skin trade and is listed as an endangered species. It is also widely raised and can be found in many zoos and farms. Breed.

14. Australian freshwater crocodile/Johnson's crocodile: Although Australian freshwater crocodiles are also threatened by poaching, they are strictly protected and are considered a vulnerable species. They are also bred in large numbers in farms.

15. African Dwarf Crocodile: Listed as moderately threatened or endangered. Although it can be reproduced in artificial breeding, no breeding farms have yet been established.

16. Mississippian crocodile: The number of Mississippian crocodiles is currently increasing, and there are a large number of artificial breeding. The total number has reached one million, and it is no longer a threatened species.

17. Alligator: Alligator is an endangered species. There are only a few hundred left in the wild, but there are still many artificially bred ones. In addition to China, some zoos and farms such as the Bronx Zoo in the United States have also successfully bred them.

18. Spectacled caiman: Two subspecies of spectacled caiman are listed as endangered, and the others are listed as vulnerable. They can be bred in captivity in many places, and some in Florida, USA, were originally used as Individuals introduced by pets can escape and form small populations in parks and even drainage ditches.

19. Broadnose Caiman: The broadnose caiman’s habitat is in areas with high population density in South America. It is seriously threatened by human activities and is an endangered species.

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

21. Shieldnose Crocodile: The skin of Shieldnose Crocodile is not suitable for use, so its existing population is still relatively large, and it is not a threatened species.

22. Connosuchus: Like the shield-nosed crocodile, the skin of the crocodile is not suitable for use, so there are still a relatively large number of them in existence and it is not a threatened species.

23. Black caiman: Black crocodiles are often hunted by local people because they prey on domestic animals. Although they are protected by law, they are still an endangered species.

Edit the protection level of this paragraph

Gulf crocodile, spectacled caiman, Nile crocodile, African crocodile, Philippine crocodile, African dwarf crocodile, Chinese alligator, broad-nose caiman The black caiman is an endangered species of wild fauna and flora. It is an internationally important protected species. It is listed in the Washington Convention CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) and is an endangered species.

Edit this historical record

Crocodile has been recorded in ancient my country. It is called a kind of crocodile in "Book of Rites". Later, Han Yu in the Tang Dynasty wrote "Sacrifice" because of the crocodile problem. "Crocodile Essay" is like an essay against thieves, with righteous words and strict words to scare away crocodiles. In the "Compendium of Materia Medica" of the Ming Dynasty, Li Shizhen even classified crocodile as a medicinal property, "Scale Part - Crocodile - Released Name: Earth Dragon." and defined the medicinal properties as: "'Indications: Heart and stomach syndrome, 'Dampness and evil Qi'" undoubtedly shows In addition to the role of crocodiles in human life, in modern times, crocodile leather has been used to make luxury goods to show its value.

In people’s minds, crocodiles are “evil fish”. When mentioning a crocodile, one immediately thinks of its big mouth, densely packed sharp teeth, hard armor, and an attitude of always being ready to eat people. Its vision and hearing are very keen, and its appearance is clumsy but its movements are very flexible. The crocodile looks like this just to eat meat. All animals, including people, are its food. No matter how ferocious the animal is when it sees it, it can only use defense as offense to avoid it, and never dare to provoke it easily.

The late Cretaceous was an important period in the history of mammal evolution. During that time, many groups began to differentiate to adapt to survive in different niches. David Krause said: "Crocodiles have become increasingly diverse since the late Cretaceous, ranging from 5 meters long to less than 1 meter long to adapt to the needs of different living environments.

Establishing extinct species and modern The relationship between plants and animals helps to study the geographical structure of the past. In the past, fossils were found more abundantly in the northern hemisphere. Before the discovery of Madagascar, there were very few fossils from Gondwana in the southern hemisphere. Early theories held that there were huge "bridges" connecting today's continents. But now, scientists believe that the African continent first separated from Gondwana 165 million years ago. The Indo-Pak subcontinent, Madagascar, South America, and Antarctica have been connected for a long time, so plants and animals were dispersed everywhere.

Edit this section of the brand with the same name

Brand introduction:

Among the many clothing brands in the international market, a crocodile with its first mouth is embroidered on the left chest of the shirt. The clothing is the most eye-catching. Although it is expensive, it is quite popular. It is sold in 80 countries around the world, with annual sales of about 25 million sets (pieces).

In the early 1930s, French tennis star RENE LACOSTE used his perseverance and superb skills to defeat the American players who dominated the world at the time in an international championship, winning this event for France for the first time. of laurels. LACOSTE's outstanding performance and success have made the French people who are full of national sense worship them like crazy.

LACOSTE defeated his opponents on the court with the tenacious spirit of "biting like a crocodile and not letting go". People admired him and gave him the nickname "Crocodile". LACOSTE is accustomed to wearing "mesh weave" sportswear on the court, and his admirers also regard his style of clothing as a target for imitation.

In 1933, LACOSTE retired from sports. He regarded the public's admiration for him as an opportunity to start a business, and decided to establish LACOSTE, using "crocodile" as the trademark, embroidering it on "mesh weave" sportswear, and mass-producing it into the market. Before the product was launched, he advertised it with photos of him defeating American tennis players. Due to the psychological influence of "yearning for success" and "worshiping famous generals", people rushed to buy this kind of clothing as soon as it came on the market.

The popularity of crocodile brand sportswear throughout France is not entirely due to LACOSTE's own fame. He knew that relying on "fame" would not last long, so he decided to make a fuss about the product itself.

First of all, based on his long-term sports experience, he knows that the clothing worn by athletes must have strong sweat absorption ability, strong stretchability, softness and comfort, so that athletes can feel no restraint during strenuous exercise. . He consulted textile experts and engineers and decided to use the best cotton yarn and knit it with the patented "double-thread double-eye special knitting method". The entire production and processing process is very scientific and will not deform or fade whether it is hand washed or machine washed. . This move made the sign louder.

LACOSTE realized that if a piece of clothing is only worn by athletes, its sales will be extremely limited. From the day it was founded, the company has been eyeing many admirers. Before his company went into large-scale production, he took the initiative and sent troops from all directions to do business like eagles and dogs hunting for food and bees looking for tricks. He expanded sportswear to be worn by men, women and children, becoming the so-called "family portrait series". In terms of marketing tactics, we adopt multiple channels to ensure smooth flow of goods, establish a broad sales network at home and abroad, and form a comprehensive marketing strategy.