Kangaroo-saveforforest

Kangaroo

Kangaroo (English: Kangaroo , / ˌ k Æ ŋɡ ə r uː / ) is a type of marsupial animal , belonging to the kangaroo Branch (Macropodidae), "Kangaroo" the term often used to refer Macropodidae the largest size of several species .

Generally speaking, large kangaroos have a higher adaptability to human development in Australia ; in contrast, many of their small relatives face greater survival threats and fewer numbers.

There is currently no large-scale kangaroo farming industry, but wild kangaroos will be hunted and made into edible meat, and this industry is also controversial .

The kangaroo's English name "Kangaroo" origin, derived from the legend of Australian Aborigines Koo ancient secret according to Scheeren (Guugu Yimidhirr) said: "gangurru", which means "do not know", which is derived from a misunderstanding [3] . When James Cook of the United Kingdom made his first voyage, he hit a reef on the Great Barrier Reef in Northeast Australia on June 11, 1770, and finally repaired the ship on the shore of the River Effort (now the port of Cook Town ). During the seven weeks, the botanist Joseph Banks accidentally discovered a quaint animal and asked the local Australian aboriginal Gu Guyi Mi She. Because the aborigines did not understand English, the reply was not Know (gangurru). Banks mistakenly referred to  ( gangurru ) as the English name for ( kangaroo ). This legend was confirmed ( 1970s ) by the linguist John B . Haviland in the study of the Migu tribe of Guguyi. The local name for kangaroo is "ganguro", and its meaning is not "don't know" .

Kangaroo symbol of Australia, Australia appears Coat in, as well as some Australian currency on the pattern. Many Australian organizations, such as Qantas, also use kangaroos as their logo. Australian military vehicles and ships are often painted with the Kangaroo logo when performing missions overseas.

Animal characteristics 

According to zoologists, kangaroos are typical representatives of marsupials. Marsupials are underdeveloped animals and belong to premature fetuses, so they need to be developed in childcare bags. A female kangaroo has four nipples, two high-fat, and two low-fat. The female kangaroo generally produces 3 to 4 larvae per litter. After the kangaroo is born, it will crawl into the bag through the cloaca and consume low-fat milk, while This also determines that only two kangaroos can survive per fetus. Kangaroos are very small at birth, only about 1 grain of peanut, and the height of an adult kangaroo is about 1.6 meters, and its weight can reach 50 kg. Kangaroos jump with their lower limbs and run very fast, with speeds up to 50 kilometers per hour. Kangaroos have a "multifunctional" tail, which has a very large effect. It can be supported on the ground when resting, and it works with the lower limbs to balance the body. The tail is an important balancing tool during running. In addition, the kangaroo tail is still Important offensive and defensive weapons. Others say that a kangaroo is a brave animal, it only moves forward, not backwards.

Lifestyle

Kangaroos are herbivores that eat a variety of plants, and some also eat fungi. Kangaroos live on small grasses that are close to the ground and leave long grass and hay for other animals. Individual species of kangaroos also eat leaves or small tree teeth. The "racism" in the kangaroo family is very serious. They cannot tolerate the entry of foreign members into the family, and even members of this family are unwelcome after coming back for a long time. Even if the family accepts new members, they have to learn a lesson, and they will not become one with the family until they learn many "rules".

Kangaroos usually live in groups , sometimes as many as hundreds. But there are also smaller kangaroos that live alone.

In the wild, when kangaroos are chased by enemies, they have their own unique countermeasures. They leaned against the big tree with their tails on the ground and kicked the enemy's abdomen with their strong hind legs. However, in the zoo, the kangaroo is still a relatively gentle and honest animal. They are carefully cared for, eat nutritious feed, and get used to life in the zoo. In cold weather, I moved into a conservatory with large glass windows.  

Kangaroos are the largest mammals that jump together with two hind feet, and jumping is a gait that is very strange for large mammals, but this is not the only way for kangaroos to walk. Kangaroos don't just jump and move. When moving slowly, they also crawl on four feet, but a pair of forelimbs and a pair of hindlimbs move together instead of moving alternately .

Growth and reproduction

The female kangaroo has two uteruses . The baby in the right uterus has just been born, and the baby in the left uterus is pregnant with the baby. Kangaroo grew up, After leaving the nursery bag completely , the embryo began to develop. Wait for about 40 days, and then be born in the same way. In this way, the left and right uterus take turns pregnant. If the external conditions are suitable, the kangaroo mother will continue to breed.

Kangaroos reproduce once or twice a year . Baby kangaroos are born about 30 to 40 days after fertilization . They are tiny, have no vision, and have little hair. They are stored in the mother kangaroo's nursery bag immediately after birth. It was not until 6 to 7 months that I started to leave the nursery bag for a short time to study and live. Only one year later, weaning will be formally weaned , leaving the nursery bag, but still active near the mother kangaroo, so you can get help and protection at any time. A female kangaroo can have a baby kangaroo outside the bag, a baby kangaroo inside the bag and a baby kangaroo waiting to be delivered.

When the baby kangaroo grows to four months old, the whole body has long hair, its back is black and gray, and its abdomen is light gray. At five months, sometimes the little kangaroo sticks its head out and the female kangaroo pushes its head down. The wallaby is more and more naughty, its head is pressed down, it will stretch out its legs, and sometimes drag the small tail outside the mouth of the bag. Sometimes, a baby kangaroo of this size will poop and urinate in the nursery bag, and the female kangaroo will often have to "clean" the hygiene of the nursery bag: it uses the forelimbs to open the mouth of the bag, and uses the tongue to carefully pull the bag out of the bag. Lick it clean. After the kangaroos grew up in the nursery bag for seven months, they began to jump out of the bag and move outside. But when frightened, it will quickly go back to the childcare bag. At this time, the childcare bag also became like a rubber bag, and it was very flexible. It could be opened and closed, and it was easy for the kangaroo to enter and exit.

In the end, the wallaby grew into the nursery bag and could no longer be accommodated. It had to move out of the bag to live. But it had to live by eating the milk of the female kangaroo, and then drilled its head into the nursery bag to feed.

It takes three or four years for the kangaroo to mature and become a kangaroo with a height of 1.6 meters and a weight of more than 100 kilograms. At this time, its physical strength has reached its peak, and it can jump 65 kilometers per hour; when the tail is swept, it can cause death.

Habitat

Kangaroos live in different natural environments. For example, the Portroyd Kangaroo will make a nest for itself while the tree kangaroo lives in the bush. Large species of kangaroo like to use trees, caves and rock cracks as shelter.

Distribution range

Mainly distributed in the grasslands and jungles of Australia and North and South America.

Most kangaroos are Australian specialties, but some tree kangaroos live in New Guinea . 

Widely distributed in various regions of Australia, from the cold Tasmania to the arid and hot Northern Territory, from the national park to the suburbs of the city, you can find traces of kangaroos.

Variety classification

Red kangaroo

The most famous kangaroo is the red kangaroo. It is the largest body and lives in the dry zone of Australia. Its average annual rainfall is less than 500 mm.under. Kangaroo's food contains a lot of water, so he can survive in areas without living water. The red kangaroo is actually only the male kangaroo is red, the female kangaroo is gray-blue, but the red female kangaroo also appeared in the group breeding cross.

 

Great red kangaroo

The great red kangaroo living in the open grasslands of southeastern Australia is the largest marsupial and a representative species of kangaroos. It is the king of modern marsupials.

The great red kangaroo looks like a mouse, like a giant rat. In fact, it is not related to mice. Its body hair is reddish brown, with a body length of 130 to 150 cm, a tail length of 120 to 130 cm, and a body weight of 70 to 90 kg. The head is small, the face is long, and there are black whiskers on both sides of the nostril. Big eyes. Ear length. Strange looks and lovable. They have small heads, big ears, and big eyes. Adapted to the jumping lifestyle, the forelimbs are short and thin, and can be used to hug food. The hind limbs are strong and the toes are merged. One step can jump 5 meters away, and the speed can reach 40 to 65 kilometers per hour. The tail grows up as a supporting organ when inhabiting and a balancer when jumping.

The great red kangaroo is active in the morning and dusk, and is hidden in the grass nest or shallow hole during the day. Like to integrate 20-30 or 50-60 group activities, mainly grass and other plant foods. It is timid and alert, and is very sensitive to sight, hearing and smell. A little noise, its long ears could be heard, so it was good. 

Eastern Grey Kangaroo

The Eastern Grey Wallaby (Macropus giganteus) is not as famous as the Red Wallaby, but the Eastern Grey Wallaby is the most common. Living in a more fertile area.

Western Grey Kangaroo

The Western Grey Kangaroo (Macropus fuliginosus) is the smallest of the three kangaroos: the adult male weighs 54 kg (119 lbs) . Lives on the southwest coast of Australia and the Darling River Basin. 

Musk Kangaroo

With a body length of only 15-20 cm and a tail length of 12.7-15 cm, it is the smallest kangaroo in the world. Compared with ordinary kangaroos jumping on the grassland, they are typical dwarf species. They have lived in the tropical rain forest for more than 20 million years. Scientists are very worried about their survival and believe that they are vulnerable to environmental changes. 

Kangaroo meat 

Kangaroo meat is high- protein, low- fat (about 2%) meat . It is known to contain the most conjugated linoleic acid in meat. It has anti-cancer and anti-diabetic properties and prevents atherosclerosis .