It is true that life on earth back in time was more lively and impressive as of now. Almost 100, 000 years back, there used to be huge and mind-blowing animals like sloths that were of the height of giraffes and the bears were the monstrous creatures who had their shoulders 6 feet above the surface and the Bunyanesque beavers weight almost as much as that of NFL linebackers. But, with the change in time, all these creatures have disappointingly disappeared one by one so rapidly and mysteriously that scientists still don’t have a clue of their originality.
Who do you think shrunk the size of huge beastly animals? Did any asteroid discharge the mega beasts from earth surface as similar to that what happened with the dinosaurs? Did any climate change or any plaque of new disease disrupt the animals from growing more?
It is certainly the mixture of factors that led to the demise of the huge size of the mammals as the ice age came closer. But, according to a study that was published on Thursday in the journal sciences concluded that the main causes of this destruction were humans and hominids.
An author, a Paleoecologist, Felisa Smith from the University of New Mexico said, “We looked at the entire fossil record for 65 million year increments, and we asked the question, is it ever bad to be big?” the answer was no, larger body mass did not make an animal more likely to go extinct, she said. “For 65 million years, it did not matter what size you were.”
“If you are hunting a rabbit, you will have food for a small family of two for a day, if you are hunting a big predator, you can feed the entire village for a day,” said Smith.