1. The longest-lived animal in the world
The longest-lived animal in the world is the lighthouse jellyfish. The lighthouse jellyfish is a small jellyfish with a bell-shaped body with a diameter of about 4 to 5 mm. The body is transparent and can see the red digestive system. It looks like a lighthouse, hence the name. The stomach of the lighthouse jellyfish is huge and bright red, with a cross-shaped cross-section. It lives in tropical waters and feeds on plankton, small crustaceans, polychaetes and even small fish. The beacon jellyfish can reproduce asexually from the polyp and is the only known organism that can recover from the sexual maturity stage to the larval stage. It takes 25 to 30 days to reach sexual maturity at a water temperature of 20°C.
2. The largest animal in the world
The largest animal in the world is the blue whale. The blue whale is a marine mammal belonging to the suborder Baleen whales, with four subspecies. The blue whale is considered to be the largest animal known to have survived on Earth, reaching 33 meters in length and weighing 181 tons. The blue whale has a slender body and a bluish-gray back, but it sometimes looks lighter in water. Like other baleen whales, blue whales mainly feed on small crustaceans (such as krill) and small fish, sometimes including squid. Usually, blue whales need to forage in the sea at a depth of more than 100 meters during the day, and can go to the water surface for food at night. Blue whales start mating in late autumn and continue until the end of winter. Female whales usually give birth once every 2 to 3 years. After a gestation period of 10 to 12 months, they usually give birth to young whales in early winter. All four oceans are distributed.
3. The most poisonous snake in the world
The most poisonous snake in the world is the Belcher Sea Snake. The Belcher Sea Snake is a venomous sea snake belonging to the genus Naja Najacidae. It was once one of the most venomous snakes in the world. It lives around the reefs of the Ashmore Islands in northwestern Australia.
4. The tallest land animal in the world
The tallest land animal in the world is the giraffe. Giraffe is a ruminant cloven hoofed animal that grows in Africa. Its Latin name means “camel with leopard print.” They are the tallest surviving terrestrial animals in the world. They can reach 6 to 8 meters from head to toe when standing, weigh about 700 kilograms, and their newborn babies are 1.5 meters high; their fur color patterns are spotted and reticulated; The forehead is wide, the snout is relatively pointed, the ears are large and erect, and there are a pair of short bony horns on the top of the head. The horns are covered with skin and hair; the neck is particularly long (about 2 meters), and the back of the neck has a row of bristles; Short; the limbs are tall and strong, the forelimbs are slightly longer than the hind limbs, and the hoofs are broad; the tail is short and the tail is black tufted. The teeth are primitive low-crown teeth, which cannot feed on grass, but only leaves; the tongue is longer and can be used for feeding.
5. The fastest animal in the world
The fastest animal in the world is the cheetah. Cheetah, also known as cheetah, is an animal of the genus Acinonyx of the cat family and the only species in the genus Cheetah. The cheetah is the fastest animal on land, and its speed can reach 115 kilometers per hour. If the human sprint world champion competes with the cheetah in the 100-meter race, the cheetah can make the world champion run 60 meters first, and the cheetah will still reach the finish line, not the sprint world champion. Cheetahs have black spots all over the body, from the corners of the mouth to the corners of the eyes, there is a black stripe, and the tail end has a black ring pattern; the hair on the back neck is relatively long, like a short mane, and the body is slender , Long legs, small head, inhabits temperate and tropical grasslands, deserts and prairies with sparse trees.
6. The fastest flying animal in the world
The fastest flying animal in the world is the tip-tailed Swift. The tip-tailed Swift usually flies at 170 kilometers per hour; the fastest speed can reach 352.5 kilometers per hour, which is 100 meters per second. The tip-tailed Swift is a medium-sized aerial bird. It is generally smoked brown, but it seems to turn black when flying in the sky. It has sickle-like wings and short feathers, distributed in the eastern and southern regions of England.
7. The smartest animal in the world
The smartest animal in the world is the chimpanzee. Chimpanzees are the smallest species in the Orangutan family, with a body length of 70-92.5 cm, a height of 1 to 1.7 meters when standing, a weight of 56-80 kg for males and 45-68 kg for females; the body has a short coat, black, and usually has white spots on the buttocks. The face is gray-brown, the hands and feet are gray with sparse black hair; the nose, ears, hands and feet of the baby orangutan are all flesh-colored; the ears are very large, protruding to the sides, the eye sockets are deep concave, the eyebrows are high, and the top of the head hair is backward The hand is 24 cm long; the canine teeth are well-developed, and the tooth style is the same as that of humans; there is no tail. Can distinguish different colors and emit 32 different meanings of calls. Can use simple tools, is known to be the smartest animal second only to humans. Its behavior and social behavior are more similar to human beings, which is of great significance in anthropological research.
8. The longest-haired animal in the world
The longest-haired animal in the world is the musk ox. Musk ox has only two subspecies, with a body length of 180 to 230 cm, a tail length of 9 to 10 cm, a shoulder height of 120 to 150 cm, and a weight of 200 to 410 kg. The body is stocky and the female is slightly smaller. The kiss and nose are bare, with tufts of hair on the forehead. The eyes are large and round, the pupils are purple-blue, and the lips and tongue are purple-blue. The two small ears are also covered by hair. The body hair is long, the hair is plump, dark brown, with hyena hair from the nape to the shoulders, more than 30 cm in length, slightly curly hair, drooping like a cloak. It looks like a cow, and its horns are like cows. At the same time, its limbs have no scent glands and female animals have 4 nipples. They are similar to cows. It inhabits rocky barren areas with severe cold weather. It is gregarious and mainly eats grass and shrub branches. In distress, a defensive formation is formed immediately, with adult males standing at the forefront, enclosing the calves in the middle.
9. The largest bird in the world
The largest bird in the world is the ostrich. The African ostrich belongs to the family Struthioidae and is the largest bird in the world. The height of an adult bird can reach 2.5 meters, and the weight of a male ostrich can reach 150 kilograms. The slender neck like a snake supports a small head with a short, flat, triangular mouth composed of several horny sheaths. The main feature is that the keel is underdeveloped and cannot fly. It is also the world The only two-toed bird among the existing birds on the island has dangerous toenails about 7 cm long on each big toe of its feet. Its hind limbs are strong and strong, suitable for running. Ostriches live in the desert grasslands and savanna areas of Africa. Because their feathers, skins, and meat have high economic value, they have the advantages of fast growth, strong reproduction, easy breeding and strong disease resistance. They are found in many countries Is widely domesticated.
10. The largest spider in the world
The largest spider in the world is a tarantula. Tarantulas belong to a family of Araneae, with 8 black eyes, arranged in 3 rows. The steps are sturdy, spiny, with 3 claws at the end. It is named after being good at running, jumping, toxic, agile, and fierce. Tarantulas have hairs like wolf hairs growing on their backs. Some tarantulas are very poisonous and can kill a sparrow, while large tarantulas can kill a person.
