Artist's impression of sabertooth cats hunting mammoths (Mauricio Anton). Animals Environment Paleontology 

Large Hunters Dominated the Pleistocene

For years, evolutionary biologists have wondered about the ecosystems of the Pleistocene epoch. How did so many species of huge, hungry herbivores, such as mammoths, mastodons, and giant ground sloths, not wipe out the plant life? Observations of modern elephants suggest that large concentrations of those animals could have essentially destroyed the environment, but they didn’t. Now, life scientists believe that the ecosystem was kept in balance by predatory carnivores that kept the population of large herbivores in check. Scientists have found fossil evidence of intense, violent attacks by packs…

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