Animal World

Brown bear (scientific name: Ursus arctos): is a carnivorous, bear family. Also known as a grizzly bear. It is one of the largest mammals of the order Carnivora on land, with a body length of 1.5-2.8 meters and a shoulder height of 0.9-1.5 meters. The male weighs 135-545 kg and the female weighs 80-250 kg. The head is large and round, the body is strong, and the shoulders are raised. The coat is thick and dense, up to 10 cm in winter; colors vary, such as gold, brown, black and brown-black. The forearm is very powerful, and the tip of the front paws can reach up to 15 cm. These claws are relatively blunt as they cannot be retracted into the sheath like felines do. The forearm is powerful in its swipe, and the "blunt" claws can do great damage. Mainly inhabits cold temperate coniferous forests, mostly active during the day, walking slowly, without a fixed habitat, and usually acts alone. During hibernation, the frequency of body temperature, heartbeat, excretory system and respiration will decrease and slow down to reduce the loss of heat and calcium, and prevent hypothermia and osteoporosis. When running, the speed can reach 56 kilometers per hour. During hibernation, litters are born, 1-4 litters per litter, and female bears often bring cubs to play in the forest in spring. The diet is more complex. Plants include various rhizomes, tubers, forages, grains and fruits, etc., and they like to eat honey. Animals include ants, ant eggs, insects, rodents, ungulates, fish and carrion. Distributed in Eurasia, and most of the North American continent.

Morphological characteristics The body length is 30-60 cm, and the largest individual has a body length of nearly 60 cm and a weight of 3-7 kg, with a maximum weight of more than 7.7 kg. It has a series of morphological characteristics suitable for burrowing and living: short and thick body, no neck, short and thick limbs, short tail and ears, thick skull, wide and low interorbital part, high supraorbital spur, high bone ridge The tendons of all parts of the body are developed and powerful. Body hair is short and thick, and coat color varies by region, season and age. The molars (including premolars) are 5/4 on each side of the jaw, there are 5 upper molars, and there are no skin wings between the front and rear limbs. living habits Marmots inhabit various grasslands and alpine meadows in plains and mountains. They live in clusters and have strong digging ability. The tunnels are deep and complicated, and they are mostly dug under rocky slopes and valleys and bushes. A large amount of sand and rocks pushed out of the hole are piled up near the mouth of the cave, forming a marmot mound. It is active during the day, eats a large amount of food, eats a lot of fine pastures every day, is resistant to hunger, does not drink water, and prefers to eat juicy feed with high water content. Wild marmots mainly feed on the leaves and stems of sedges, grasses, and the flowers of legumes, and have seasonal changes, and are omnivorous under feeding conditions. Marmots are easy to domesticate, do not hurt people, are not heat-resistant, are afraid of exposure, and have strong disease resistance. When the temperature is below 10 ℃ for a long time, it will hibernate naturally, and the time can be as long as 3-6 months. When the temperature warms up, it will naturally wake up.

Pan troglodytes: human family[1], body length 70-92.5 cm, standing height 1-1.7 m, weight 56-80 kg for males and 45-68 kg for females; body coat is short, black, usually with 1 White spots, gray-brown face, gray hands and feet covered with sparse black hair; the nose, ears, hands and feet of the juvenile orangutan are flesh-colored; the ears are extra large, protruding from both sides, the eye sockets are deep concave, the eyebrow ridges are high, and the hair on the top of the head is The back; the hand is 24 cm long; the canines are developed, and the tooth type is the same as that of humans; no tail. Habitat in tropical rain forests, living in clusters, each group of more than 2-20, led by an adult male. Feeds a lot, eating fruits, leaves, roots, flowers, seeds and bark, some individuals often eat insects, bird eggs or catch duiker, baby baboons and monkeys, and the prey obtained by the male allows members of the group to share. Making simple nests in trees, larger orangutans are more arboreal and can also walk on the ground with slightly curved lower limbs. There is a certain range of activities, with an area of ​​26-78 square kilometers, and the foraging area is often the place where they concentrate. There is communication between groups. They have maintained a mother-son relationship for a long time, and often return to the group to visit their mother after being divided into groups. Have lunch break habits. The gestation period is 8-9 months, each litter is 1 cub; the lactation period is about 1-2 years, the sexual maturity is about 12 years, and the female can give birth to the 4th litter at the age of 30. Lifespan is about 40 years. Can distinguish different colors and make 32 different sounds. Able to use simple tools, it is the most intelligent animal known after man. Its behavior and social behavior are more similar to human beings, which is of great significance in anthropological research. distributed in central Africa.

Aix galericulata Anseriformes, ducks. Yuanyang refers to male birds, and Yuanyang refers to female birds, so Yuanyang is a compound word. It is a medium-sized duck of the order Anseriformes, the size is between the mallard and the green-winged duck, the body length is 38-45 cm, and the weight is about 0.5 kg. Male and female are different colors, the male bird has a red beak, orange-yellow feet, bright and gorgeous feathers, a gorgeous crown feather on the head, a broad white eyebrow pattern behind the eyes, and a pair of chestnut-yellow fan-shaped erect feathers on the wings, standing like a sail. The back, very peculiar and striking, is easily recognizable in the wild. The female bird has a black beak, orange-yellow feet, gray-brown head and upper body, white around the eyes, and a thin white eyebrow pattern behind it, which is also very eye-catching and unique. Mainly inhabits mountain forest rivers, lakes, ponds, reed swamps and rice fields. Omnivorous. The mandarin duck is a famous ornamental bird in China. The reason why it is regarded as a symbol of love is that the mandarin ducks that people see are always in pairs. It is a bird that often appears in ancient Chinese literary works and myths and legends. People often use the mandarin duck to describe the love between men and women.

The phylogenetic tree of snub-nosed monkeys has always been controversial about the classification within the genus of the snub-nosed monkey. It has been observed that mutual breeding is fertile in captivity, and it is believed that there should be four subspecies of a species. At present, there is a consensus that the back-nosed monkey was originally a species distributed in the Hengduan Mountains, and later evolved into four species due to reproductive isolation due to geological changes. This isolation occurred 25,000 years ago. Due to the short isolation time , these are not completely species. According to different ecological characteristics, Yunnan snub-nosed monkeys that survive at high altitudes are called evolutionarily advanced species, while Vietnamese snub-nosed monkeys are relatively primitive, Sichuan snub-nosed monkeys and Guizhou snub-nosed monkeys are closely related, and Guizhou snub-nosed monkeys are relatively primitive.

When the owner pranks the dog, he is seen by another dog, and the owner tries to prank the other dog. It shows strong dissatisfaction with the owner.

Due to human blind activities, the ecological environment has been destroyed, resulting in a reduction in the panda’s habitat area. 2. Panda's food source is relatively single. Once bamboo is damaged and the food source is reduced, its survival will be affected. 3. The panda's reproductive system is infected by certain bacteria, the female spawning rate is reduced, and the survival rate of the born panda baby is low, resulting in a reduction in offspring.

It belongs to carnivorous items, pandas, panda sub-colas, and pandas are the only mammals. There are only two sub-species. Male individuals are slightly larger than females. The body shape is fat like a bear, rich and plump, the head is round and short, the head and body are 1.2-1.8 meters long, and the tail is 10-12 cm long. Weighs 80-120 kg, the heaviest can reach 180 kg, the body color is black and white, the cheek is round, there are big black eyes, the iconic way of walking in the eight words, and the claws like an anatomobile. The panda has thick skin and can reach 10 mm at its thickest point. The appearance of black and white is conducive to being hidden in the woods trees and the snowy ground and is not easily discovered by natural enemies. Living in a dense bamboo forest at an altitude of 2600-3500 meters, where the annual air is thin, the clouds are drowning, and the temperature is lower than 20 ℃. There is plenty of bamboo, and the distribution of terrain and water sources is conducive to the species' nesting and feeding of cubs. Big panda is good at climbing trees and loves to play. The act of climbing trees is generally close to the proposed marriage period, or to escape danger, or a way for the weak to avoid the strong when they meet each other. Big panda removes half of the time to eat every day, and most of the remaining time is spent in sleep. In the wild, the panda sleeps 2-4 hours between every two meals. 99% of the food of big panda is bamboo, and there are more than 12 and more bamboo plants available for big panda food. The life span of the wild panda is 18-20 years, which can exceed 30 years in captivity. The panda has lived on earth for at least 8 million years and is known as “ Living Fossil ” and “ Chinese national treasure ” is the national beast, the image ambassador of WWF, and is the flagship of world biodiversity conservation Species. As of January 2021, the wild population of Chinese panda has increased to 1,864. [1] Big panda is a unique species in China, and the main habitats are the mountainous areas of Sichuan, Shaanxi and Gansu in China.

Dogs are the most loyal friends of mankind.People who like animals like dogs.Many animals imitate human movements.Of course dogs are the same.It's cool to be a dog and learn a scooter