1, bees.

Queen bee is the only female bee among bees that can give birth to offspring. In the mating season, drones will gather somewhere to fly in the air, attracting virgin queen bees. When the virgin queen bee appears, the drone will chase after it, and the one who catches up with the virgin queen bee will mate.

2、? ? ? ? Fish.

? ? ? ? Fish looks very ugly, with a wide flat head and teeth of different sizes, but they were also very cute when they were young. Their mating style is also very strange, called sexual parasitism. Male? ? ? ? The fish is very small, only a few centimeters long, but the female is more than one meter long.

Male? ? ? ? As soon as the fish is born, it begins to look for a mate and find a female? ? ? ? After the fish, bite the body of the female fish with your mouth and slowly merge with the female fish.

After fusion, male? ? ? ? Only the seminal vesicle is left in the fish's body, and all the other parts have disappeared, just like females? ? ? ? A new organ in fish.

But not all males? ? ? ? Fish will parasitize the female fish, and some of them will leave as soon as mating is over. Female? ? ? ? Fish versus male? ? ? ? Fish comes to all, and they can have multiple partners in their lives. This breeding method has been effectively improved? ? ? ? The pregnancy rate of fish in the vast sea.

3. Crane ostrich.

The ostrich, also known as the cassowary, has a hot temper and is the most dinosaur-like living bird. It lives in a dense forest and can emit low-frequency sound through the forest. The yellow horny helmet on its head is its sound wave receiver.

In a mating season, females usually mate with two or three males. The nest is made of fallen leaves, grass stems, wooden sticks, etc., and the female ostrich lays eggs on it. These eggs are not necessarily the male's own.

After that, the female bird will find another mate and take care of everything, and the task of incubating eggs and caring for young birds will be left to the male ostrich. The male ostrich is really a good father with a big heart.

4. spotted hyenas.

The female hyena is the leader of the group. The male hormones of female hyenas are higher than those of males, and they are bigger, more aggressive and have higher status than males.

Earlier, people thought the leader was a male, but later, when they saw that the leader would have children, they found out that she was a female. The female spotted hyena has a unique external genital structure, which makes her dominant in mating rights. Higher-ranking female hyenas will have multiple male spouses.

5. Barbary macaques

Mammals are polygamous, among which Barbary macaques are typical, and their cubs have different fathers. Barbary macaque females will mate with all adult males in the same group after estrus.