How do animals find a mate and maintain the breed?

Most penguins, once they have chosen a 'mate', will remain faithful for the rest of their lives. Males will stretch their wings and then stretch their necks to the sky, hissing a shrill sound to attract the attention of 'mates'. Females who see this performance will come and choose the 'brother' they like. Every March and April each year, Emperor penguins climb ashore, go inland, to a safe place to solicit and mate with each other. Their love will crystallize into a single egg weighing about 450 grams.

The standard of evaluation of lionesses for males is appearance. Those with dark coats and bouncy manes usually have a 'peach number'. But when they become a family, the leaders, if they do not win the duel, will sooner or later be robbed of their family by someone else.

Picky mate is the cause of infertility in pandas. Most farmed pandas require artificial insemination to conceive. What's even more surprising is that the panda's estrus season lasts only a few days a year.

In the bee world, all worker bees are female. They have to take care of building the nest, collecting honey, taking care of the queen and young bees, protecting the hive. A hive usually has one queen, 100-2,500 male bees and 30,000-60,000 worker bees. The role of male bees is to mate. When the new queen bee leaves the hive and to build her own empire, they will follow the queen and wait to be chosen as 'consort'.

To maintain their species, male sea otters both bite the female's nose and mate. If they are kept in an aquarium, as long as the female shows a rebellious attitude, the male will immediately give up the idea. To keep them from inbreeding, it is common to separate juvenile otters from adult otters.

Elephants are very careful when choosing a mate. Usually, males and females will live in the same flock. During estrus, female elephants will secrete pheromones to signal to big and strong elephants and young men to approach. During estrus, the male elephants' temples will continuously secrete a thick black fluid, urine also oozes. Female elephants will follow that to choose. In elephants, there is also a case of 'lightning love' sometimes.