Mammals standing at the top of the food chain are different. Most female mammals can only ovulate a limited number of eggs at a time. In order to feed their offspring as much as possible, in vivo fertilization is usually used, and the mating time of different animals is different. The longest mating animal is in Australia.
There is a marsupial on the Australian continent called marsupial, which can last 14 hours at a time, but after such a long battle, they will die, so we don't have to envy this unlucky little creature at all.
Australia is surrounded by the sea, and many land creatures can't cross the sea to come here, so the animals here are very different from those on other continents. There are many proxy animals in Australia, such as kangaroo wombat, wombat, and this mating champion marsupial. This animal looks like a mouse, but its nose is obviously different from that of a mouse. In addition, like all Bond animals, it has a pouch in which offspring can hide and continue to develop after birth. That's how the so-called obscene development came about. This creature is very strange. When the male comes, he won't do anything in estrus, just want to do that. Why is this happening? The main reason is that there is excessive testosterone in male genes, and testosterone is a kind of androgen. In estrus, they will let these little animals mate crazily. But it also led to the short life of this animal.
Giraffes live a long life, but mating time is short. Giraffe mating time is only about one second. Although the mating time is short, there is no shortage of work done before mating. Male giraffes also practice riding horses. When females signal during estrus, males are inseparable, but they are in no hurry to mate. Instead, taste the chemical components in each other's urine first, and only when the headline also analyzes that each other is in estrus can they mate with females.
Giraffes are timid, and it is generally difficult for males to pair successfully, but once they succeed, they can be done in one second.