STEPHEN J. KRASEMANN / SCIENCE PHOTO LIBRARY STEPHEN J. KRASEMANN / SCIENCE PHOTO LIBRARY
The terms saber-toothed cat, sabertooth, and saber-toothed tiger describe numerous species, mainly in the family Felidae, that lived during various parts of the Cenozoic Era. They are most known for having maxillary canines which were, in some species, up to 20 cm long and extended down from the mouth even when the mouth was closed. Saber-toothed cats were generally more robust than today's cats and were quite bear-like in build. This skeleton is shown leaping onto prey at the Royal Tyrrell Museum, Alberta, Canada.
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