We know that africa is home to the only gregarious cat, the lion. There are several lionesses and a male lion in the lion group, and these lionesses are able to breed the next generation. However, the other social family, the lemur, is different from the lion herd, in which only one female lemur is the leader, and in addition to her being able to breed the next generation, the other female lemurs cannot reproduce and can only spend a lifetime to take care of the queen's offspring.
What kind of existence is the fox? The fox and the flathead brother are distant relatives, although it is not large, but the prey is a fierce character, whether it is a scorpion spider, or a cobra, the fox badger does not refuse. In the large family of foxes, the entire group is almost always female, and the male foxes basically live a wandering life, leaving the group when they grow up, wandering in various fox families, and leaving their own DNA. The Fox Sisters compete to elect a fox as their leader.
The little lemur, in order to maintain its own agility, has no fat reserves in the body, so the fox must keep foraging, and once there is no food, the entire population will be starved to death. For any social animal, the larger the population, the healthier the whole population, but the fox sisters are not the same, the fox queen only allows herself to breed offspring, while her sisters can not breed, once bred will eradicate the offspring of the sisters, or even expel the little sister from the group.
Why is that? If combined with the living environment of the fox, we will have a better understanding of this problem. Although the lemur is a social animal, it is too small to occupy its territory. Therefore, the fox badger family has been in a state of continuous migration, limited by food, the fox family can not raise a larger number of cubs, if the sisters of the fox family have offspring, it is estimated that none of these small foxes will survive.
So in the fox family there is a strange habit of only a queen, and once there are other sisters to give birth, it will be expelled. A female lemur leaving her population often waits for a severe existential crisis. What do you think?