hinh anh trai cac bu bu lon

There is no such word, only the word hippopotamus, which means hippopotamus.

Hippopotamus amphibius (scientific name: Hippopotamus amphibius) is the largest existing omnivorous mammal among freshwater species. It is also the largest extant land-based mammal after the African elephant, Asian elephant, African forest elephant, white rhino, and Indian rhinoceros. The average individual body length of animals is 3.3 meters, the shoulder height is 1.5 meters, the average weight is about 1.35 tons, the general mass is between 0.9 tons and 1.8 tons, and the largest wild individual weighs 2.66 tons (wild individuals above 2.7 tons are actually satellite data Or the mass unit data is wrong, and the legendary so-called 5-ton individual has the wrong mass unit). The body is thick and round, the limbs are very short, the feet have 4 toes, the head is huge, the eyes and ears are small, the mouth is particularly large, the tail is small, the lower canine teeth are huge, 50 to 60 cm long, 2.5 kg in weight, and the skin is thick, about 40 ~50 mm, except for the sparse hair on the snout, tail, and ears, the skin of the whole body is naked and purple-brown; living in areas with abundant aquatic plants in tropical Africa, they often form groups of more than 10 individuals, and sometimes they can form groups of hundreds. In large groups, individual hippos are mostly adult males who have been expelled from the group; they spend almost all of their time in the water, eating water and grass, with a daily food intake of more than 80 kilograms. When there is a lack of water and grass, they come ashore at night to forage for plants, crops and even other animals. The corpse will also actively prey on other herbivores; has a three-chambered stomach, does not ruminate, has a bad temper, is afraid of the cold and prefers warmth, and is good at swimming. It can sneak along the river bottom for 5 to 10 minutes; during the mating season, males sometimes fight and become pregnant. The period is about 8 months, and each litter contains 1 litter. The lactation period is 1 year, sexual maturity occurs at 4 to 5 years old, and the life span is 35 to 40 years. Distributed in Africa.

The hippopotamus is a mammal on land after the African elephant, Asian elephant, African forest elephant, white rhino, and Indian rhinoceros. It has a large and clumsy body, with a body length of 300-360 cm and a tail length of about 56 cm. Centimeters, the general weight is between 0.9-1.8 tons (the data above 2.7 tons are satellite weight, or the weight unit is wrong) but it is relatively short, with particularly short limbs, and the shoulder height is only 140-160 cm, which is less than half the height of an elephant. It has a thick head and a particularly large mouth, which is larger than the mouth of any existing land animal, and can be opened at a 90-degree angle. The teeth in the mouth are also very large. Both the incisors and canines are fang-shaped and are the main weapons of attack. The lower incisors do not grow upward, but extend parallel to the front like a shovel. The length can reach 60 to 65 cm and the weight is 2 to 3 kilograms, the length of the canine teeth is also about 60 centimeters, and the hardness is so high that it can even bounce ordinary pistol bullets. The eyes, nostrils, ear shells, etc. are all located on the upper end of the face, almost on the same plane. The skin is very thick, with a thickness of 4 to 5 cm on the back and sides. It is dark brown and reddish purple in color, smooth and hairless, with only some hair on the end of the mouth, the inside of the ears and the tail. There are four toes of almost equal size on each of the front and rear limbs, with hooves at the tips, shaped like flat claws, and slightly webbed between the toes.

The body of the hippopotamus is covered by a thick layer of skin, which is blue-black with brick-red markings. Except for some short hairs on the tail, there is almost no hair on the body. The hippopotamus' skin is extremely thick, and underneath it is a layer of fat, which allows it to float effortlessly out of the water. When a hippopotamus is exposed to the air, much more water evaporates from its skin than that of other mammals. Hippos have no sweat glands in their skin, but they do have other glands that secrete a reddish moist substance similar to sunscreen. , and prevent insect bites. Hippos cannot stay out of water for too long. For this reason, hippos must stay in water or moist habitats to prevent dehydration.

The honest-looking hippopotamus is a beloved image in countless cartoon stories: cute little ears, playful round butt, bead-like eyes... everything seems so gentle. But you have to know that hippos also have a violent side, and they consider their muddy ground to be sacrosanct. Hippos kill several people each year who intrude on their territory, intentionally or unintentionally.

Hippopotamus are amphibians that like to live in groups, are good at swimming, are afraid of cold, and like warm climates. Their skin will dry out and crack if they are out of water for a long time, and their life of foraging, mating, giving birth, and breastfeeding are also carried out in the water. Hippos are herbivores, but their sparse tusks are ten centimeters long. Female hippos are extremely territorial and aggressive in order to protect their calves. Hippos move in pairs or small groups, and older males often move alone. Nocturnal: They sleep or rest in or near rivers almost throughout the day. They come out to eat at night and sometimes swim more than 30 kilometers along the river to find food. They mainly feed on aquatic plants; they occasionally eat land crops, mainly grasses, and sometimes go to the fields to eat crops. When food is scarce, they also eat meat.

The hippopotamus has a huge body, but it can walk easily in the water. Under the hot sun, the mud and water on the body can protect it from the scorching sun. The sweat glands on the hippopotamus' skin can secrete a red liquid that acts as a natural sunscreen to moisturize the skin. It is often mistaken for discharged blood and is called "blood sweat." Because its skin is very sensitive and will dry out if left in the water for a long time, it spends most of the day lazily in the water, relying on the help of water to regulate its body temperature and prevent skin from drying out, and sleeps on the shore at night. Its eyesight is very poor and it cannot see clearly even above the water, but this does not affect its life, because the water is often very turbid and it is impossible to see far away.

Hippos like to live in groups and are led by females. There are 20 to 30 animals in each group, and sometimes there are more than 100 animals, especially in places with dense aquatic plants, with an average of one every 5.5 square meters. . It has a special set of muscles that are flexible like valves. It can close its ears and nostrils when diving. Each dive can last about 5 to 10 minutes, but it is not as physiologically correct as aquatic mammals. It has the ability to adapt to water, lives on land for a long time, and can run at a speed of 20 kilometers per hour, so it can only be regarded as a semi-aquatic animal. Hippos usually submerge their whole bodies in the water, with only their ears, eyes and nostrils exposed. This way they can not only breathe normally, but also detect danger in time without being noticed by the enemy. In addition to being safe and cool, the water also helps support its large and heavy body, allowing it to move freely through the water.

Although hippos always stay in the water, they can swim and even dive. When frightened, they generally avoid water. They spend most of their time in the water every day. When lurking underwater, they usually raise their heads above the water to breathe every 3 to 5 minutes, but they can lurk for about half an hour without coming out of the water to breathe. Hippos are usually quiet, but once they lose their temper, they often fight. Each hippo uses its sharp teeth to stab the other's thick skin. Sometimes when it gets angry in the river, it dares to overturn the boat and bite it into two pieces.

Hippos mate in the water and have no fixed breeding season. The gestation period of the female is 210 to 255 days. She gives birth in the water and gives birth to one calf per litter. Newborn cubs weigh 40 to 50 kilograms and can walk and swim within 5 minutes of birth. The temperament of the mother hippopotamus becomes very vicious when she is raising her cubs. After the cubs are born, the female takes careful care of them, breastfeeds them in the water, only allows them to move within the visible range, and patiently teaches them to swim and roll. Protect them from harm. In the following months, the female often takes her cubs away from the group, because the cubs may be killed by ferocious males or attacked by crocodiles. After 4 to 6 months, the cubs can eat grass. The lactation period is about 1 year. The female's sole responsibility for raising offspring can be extended to 18 months. Females mature between 7 and 9 years old, males between 9 and 11 years old, and their life span is about 30 to 40 years.

Female hippos usually live alone with their calves for two months, quietly enjoying family happiness. Mother and son often lay quietly to rest, with the little hippo clinging tightly to its mother's mouth. Sometimes, the mother wants to take it into the water, because the hippopotamus can't get rid of the problem of how to stabilize its body temperature. After staying on the shore for a long time, it needs to go into the water to cool down. At this time, the little hippopotamus will skillfully climb on the mother's back or neck and get into the water. . The baby hippopotamus still needs to feed continuously. The female hippopotamus lies horizontally and stretches out one hind leg to expose the breast. When the baby hippopotamus is sucking milk, the female hippopotamus will use the other hind leg to hold the breast and keep feeding. Massage gently to stimulate milk production. Mosquitoes would fly in from time to time. These guys like the stray milk very much, and sometimes they would rest around their nipples. The female hippopotamus would then slap the river water hard with her big mouth to scare away the mosquitoes flying everywhere. When the baby hippopotamus can land on its own, the mother hippo will no longer coddle it and let it dive by itself. The baby hippopotamus will inevitably fall when it climbs to the shore, so the mother hippopotamus will hold it with her mouth and encourage it to get up on its own. The female hippopotamus will not condone the naughty games of the baby hippopotamus. She will use her huge body to block it, or simply use her big mouth to "teach" it.

The vowel o is pronounced as the short vowel /ɑ/ in stressed closed syllables. When pronouncing it, the tip of the tongue is close to the lower teeth, the back of the tongue is raised, the gums are nearly fully open, and the opening is large. The lips are rounded, and this sound appears at the beginning, middle and end of words, such as:

ox bull (castrated)

October October

octopus

on (emphasis on contact)

ostrich

operate

Hope I can help you clear up your doubts.