<h1 class="pgc-h-arrow-right" data-track="1" > hippopotamus society</h1>
Hippos are the second largest mammal on land, after elephants. Female hippos like to live and live in groups, each hippopotamus family is headed by an elderly female hippopotamus, in addition to the hippopotamus herd also has 10-20 female hippos and their children. Female hippos generally remain in the family when they reach adulthood, while male hippos are expelled. The mature male hippopotamus likes to go alone, and some young male hippos like to live in a team and have a care, so that they will not be bullied by the big hippopotamus.
Usually, male hippos swim around the periphery of the female hippopotamus group, on the one hand, they play a role in defending the hippopotamus group, on the other hand, they can take the opportunity to set up a set with the female hippopotamus and exchange feelings. Hippopotamus social polygamy phenomenon is very serious, the competition between male hippos is very fierce, everyone wants to be closer to the female hippopotamus herd, love enemies see each other, extra red eyes, male hippos break out of conflict without a word, open their mouths, revealing 4 saber-like large canine teeth.
In the dry season, the river is cut off, the water source in some areas is depleted, and the hippopotamus activity place is much smaller. So the hippopotamus of different families gathered together and crowded in the middle of the river, just like the summer swimming pool in the "dumplings", densely packed. At this time, the number of hippos can reach more than 200, which is too crowded.
Hippos are naturally afraid of heat, and their skin will dry up after a long time in the sun, so hippos like to bathe in the river during the day to cool down, and only go ashore at night to find fresh grass. When they reached the shore, the hippos of the same family also dispersed, each looking for food, and was not as closely related as expected. When you are full, you will return to the water with a big belly and close together.
<h1 class="pgc-h-arrow-right" data-track="15" > hippopotamus</h1>
Female hippopotamus is in heat throughout the year, usually once a month, and male hippopotamus can take some trouble to get close to the female hippopotamus. The male hippopotamus first faced these women outside the female hippopotamus, calling with affection, eager to get a response from the goddess in his heart. The female hippopotamus resisted, hung the male hippopotamus, tested it, and waited for more than half an hour before coldly responding to the male hippopotamus. The male hippopotamus was secretly happy in his heart, and he felt that there was a play, and the child's name was thought out.
In fact, a response from the female hippopotamus is the ticket for the male hippopotamus to enter the female hippopotamus herd, without permission, the male hippopotamus does not dare to step into the half step, although it is stronger than the female hippopotamus, but the female hippopotamus does not talk about martial virtue, and if it is rushed up, no "hippopotamus" can resist.
Male hippopotamus will come to visit the female hippopotamus that gives it a response every day, once born twice, and finally the male hippopotamus feels that the time is ripe, it will throw the excrement on the female hippopotamus, and the female hippopotamus will also respond to the male hippopotamus with excrement, which is considered to be the female hippopotamus accepting the male hippopotamus's invitation to together.
Then everything came naturally, and the two hippos walked to a place without "hippos" and began mating, omitting 800 words here. After mating, the female hippopotamus returns to normal life, while the male hippopotamus continues to look for the next object.
<h1 class="pgc-h-arrow-right" data-track="16" > the birth of the hippopotamus</h1>
The pregnancy of the female hippopotamus is short, only 8 months, and the rhinoceros, which is about the same size as it, is 16 months pregnant, while the elephant is pregnant for 22 months. The female hippopotamus will leave the family before the pot and find a quiet and safe place to give birth to the baby hippopotamus. Quiet means to be away from the hippopotamus herd, they are too noisy; safety is mainly to be without crocodiles, they are the natural enemies of the small hippopotamus.
The female hippopotamus usually gives birth to only one small hippopotamus and occasionally gives birth to two, but the last survivor is often only one, because the hippo mother's energy is limited, she can't take care of it at all, and will concentrate on taking care of one of them, while ignoring the other. Little hippos swim after birth, they also eat underwater, eat a few bites and run up to change their breath, it is not easy to be young.
Two weeks later, the female hippopotamus returned to the big family, and the little hippopotamus followed her. Usually in a few days, the little hippopotamus will fully integrate into the hippopotamus herd, and the hippo aunts and grandmothers will get along happily and harmoniously. At this time, the hippo mother can breathe a sigh of relief.