The La Brea Tar Pits was a natural predator trap that lured unsuspecting dire wolves and saber-toothed cats to their deaths. Herbivores, probably looking for a drink of water, would become trapped in the tar that is estimated to be up to 75 feet deep in spots. The thrashing animal would alert hungry predators, who would then go into the tar pits to get an easy meal. But the predators, in turn, got trapped. About 90 percent of the animals found at the site are predators.

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