As paleontologists sifted through the bones mired in the thick, sticky La Brea Tar Pits, they noticed something peculiar. Some juvenile Smilodon fatalis skulls had two sets of sabers—four blade ...

The bone may not look impressive ... ocelots and river cats. The Smilodon fatalis might not have been the only cat species to roam the region during the last ice age, but it certainly stood ...