A long time ago, probably more than 60 million years ago, during the age of dinosaurs, a tiger grew wings. Of course, that tiger is not this tiger. The one with wings is not a large cat mammal, but an egg-laying carnivore. It has sharp teeth and claws, can run like flying, can swim, and can climb trees. It can be called the best among beasts. king. This guy is actually a type of dinosaur. For the convenience of identification, we call it the dire tiger. And because the dire tiger is an extremely ancient tiger, it is simply called the tiger. Tigers feed on many dinosaurs and do not shy away from those of the same family and species. This is the same as the most advanced mammals today: people eat pigs, cattle and sheep, which are also mammals, as a daily meal. They also eat apes, monkeys, orangutans and baboons. Various parts of the human body are also listed in mysterious or hidden recipes. middle. However, unlike today's mammals that like to eat oviparous animals, the oviparous dire tigers did not eat mammals. This was not because of taboos. The mammals at that time were too small, smaller than today's mice, and not big enough for tigers. Gap between teeth. These little things are difficult to catch when they are underground. Catching them will consume too much of their own calories, and the gain outweighs the losses. This is the same as humans not catching fleas and bedbugs to eat. Long story short. One day, a female tiger hatched a little tiger with two buds on its shoulders. This is a little weird, but not too weird, just like someone has two extra fingers now, everyone gets used to it after a while. Unexpectedly, the fleshy buds on the shoulder of this little tiger gradually developed into fleshy wings. When it spreads its wings to fly, its wingspan is more than ten meters, like an airplane. It is also an airplane with vertical take-off and landing functions. All it takes is one leap in the air and two flaps of its wings. , the Wing Tiger took off. The winged tiger has the ability to fly more than ordinary tigers, so it shows its outstanding ability in hunting. Fear of cattle, sheep, deer, etc., catching them is as easy as picking them out from a bag. Even the lions, bears, rhinoceroses and elephants that we usually don’t dare to provoke are still picked up and eaten like people eating sweet potatoes. The emergence of Wing Tiger is simply awesome. This wing tiger is male. When he was a child, the girls laughed at him for being ugly and ignored him. When Yihu's talent spread all over the sky, the girls quickly changed their aesthetic views. They all thought that he was extremely beautiful, handsome and cool. Whenever Yihu landed like a giant eagle, the girls on the ground screamed. Some of them fainted, while others who were awake sighed and rushed forward, vying to treat him better. Those wingless tigers become jealous when they see it. The unmarried ones feel the danger of being single, the married people feel the danger of getting divorced, and the dull ones will inevitably feel the danger of a third party intervening. The male tigers intended to harm Yihu, but they also knew that they could not defeat him, and they could not catch up with him in a group fight. The sneak attack might be successful, but the girls formed the Wing Tiger Guards, guarding the sleeping Wing Tiger on three levels inside and outside. They were loyal and just wanted to sleep with them once in their turn, or to increase the chance of being lucky enough. Chance. Seeing this, the wingless tiger had no choice but to give up, and turned to imitating the winged tiger, using various methods to forge flesh wings and pretend to look like a winged tiger. Fashion has changed. Unfortunately, it is quite difficult to imitate, and the secrets are often exposed, and the girls laugh at him like a bald donkey. The gene of the winged tiger is dominant. In other words, when the wingless gene encounters the winged gene, the wingless gene cannot express its own genetic traits. This means that all offspring of a winged tiger will have wings, and the offspring of male and female offspring of a winged tiger will also have wings with half the probability, regardless of whether their mates have wings or not. Under the instigation and encouragement of the girls, Yihu's sexual ability was greatly displayed, and soon he had descendants all over the world. As for how long this "soon" will be, due to its long history and difficulty in verification, we can only give a rough estimate. Based on a hundred offspring per year, the number of direct offspring in a winged tiger's reproductive period of twenty years is two thousand. Half of the two thousand offspring are male, and they also reproduce two thousand in one generation. In this way alone, more than one million offspring can be reproduced in thirty or forty years. Calculated based on the inheritance of dominant genes, the descendants of Winged Tiger will exceed 10 billion in less than a century. Of course, this is just a hypothetical number. It is assumed that the base of the tiger's mouth is already very large, so there are enough girls and food can be supplied. In fact, the short-term problem is that there are not that many girls, and the long-term problem is that there are not that many food. We won't do the pesky arithmetic problems anymore. All in all, in just a century or two, the elegus has become the largest and most successful species on earth, and this estimate is absolutely unerring. For male wing tigers, it was really a wonderful golden age. All large enough animals on the earth have become convenient food at your fingertips. You need to eat all day long, and live a happy life. How beautiful there is. However, the good times did not last long, and the food crisis unexpectedly struck.