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While jaguars now live only in the Americas, they are descended from Old World cats. Two million years ago, scientists believe, the jaguar and its closest relative, the similarly spotted leopard, shared a common ancestor in Asia. In the early Pleistocene, the forerunners of modern jaguars crossed Beringia, the land bridge that once spanned the Bering Strait and connected Asia and North America. These jaguar ancestors then moved south into Central and South America, feeding on the deer and other grazing animals that once covered the landscape in huge herds.