Humans do not have natural enemies?

I believe that on your side, there must be a lot of people who are afraid of snakes or insects, or you are one of them, although people have not been in direct contact with them, more than they have not been hurt, alone on the TV screen, goose bumps, scientists analyze, this should be our body was hidden in the "fear gene" effect The effect of these ancestors passed down the genes, can effectively help those who have not seen the natural enemy of the offspring avoid unknown harm.

Shakespeare said, "Man is the essence of the universe, the spirit of all things!" But from a biological point of view, humans at the top of the food chain do not exist as natural enemies. I'm afraid Shakespeare was wrong, scientists point to a vicious animal that nearly ate all of our human ancestors. The name of this species is called dinosaurs.

In modern life, there is a condition called "cat phobia", some people see a cat and will have an irrational fear of cats. Some biologists believe that this is more or less related to the fear of cats.

The southern archaeology, an extinct genus of hominids, is a late representative of the forming human species that lived about 5.5 to 1.3 million years ago today, and they are also the ancestors of all species originating worldwide today, widely distributed in eastern and southern Africa.

For primates, it seems that at any given time, felines are their mortal enemies. Most felines can climb trees as well as primates and have faster and stronger bodies, and according to fossils excavated by scientists, more than a million years ago, southern apes also had big trouble with dinosaurs.

Inside many caves in South Africa, scientists have found a large number of fossilized bones left over from dingoes, a few of which are large antelopes and baboons, and, shockingly, a large percentage are southern archaeology!

The dingo and the saber-toothed tiger are distant relatives, it is two meters long and weighs about 190 kilograms, similar to a lioness, but covered with spots, and they lived between 5 million and 1.4 million years ago, coincidentally in the same period as the southern archaeology.

Why would dinosaurs be attracted to southern archaeology? From the fossils obtained by scholars, the dingo was a predator that was good at lurking, however, the southern archaeology's visual hearing was not outstanding among many preys, and it was less capable of self-defense or flexibility than the baboon, which did not have well-developed canines and artificial weapons to protect itself, so it naturally became the target of the dingo's hunting, in addition to the southern archaeology because of the same In addition, the southern ape for the same reason, also on the list of saber-toothed tiger hunting.

This also makes people reverie, in a dark and windy night, the dingo under the cover of the night, silently approaches the ancient ape sleeping in the trees, the ancient ape suddenly woke up by the sound of branches, but before he can react, sharp teeth have been through its neck, the dingo took his trophy, back to the cave ...... Our ancestors likely spent their lives under such fears.

Scientists have unearthed several heads of the southern archaeology, surprisingly, have examined the teeth traces with dingoes, the fossils of the southern archaeology are already rare, it can be imagined that our ancestors in the long years were immersed in the intimidation of dingoes, some scientists pointed out that the southern archaeology was almost eaten up, the scale of their numbers has not developed, a large part of the reason is the relationship of dingoes. But the good thing is that more than 1.4 million years ago, the dinosaurs will be extinct because of the cold weather and other problems. But the southeastern survived. Otherwise, today's shovels would likely have been a pile of cat poop a million years ago.