The first animal that is regarded as the king of sex may be the rabbit. For some mysterious reason, they are regarded as the most typical example of "lust" and "male supremacy" in the world. They have magical reproductive ability: generally speaking, rabbits have reproductive ability after two months of birth, and a pair of rabbits can give birth to a pair of rabbits every month. Rabbits can produce four to six times a year. Scientists believe that if no measures are taken to limit rabbit reproduction within 90 years, there should be a rabbit standing on every square meter of land on the earth. Scientists now know that the super reproductive ability of rabbits is due to their unique physiological characteristics: after they give birth to their young, the embryos in their bodies will increase.