Deinofelis was a "missing link" between Creodonts and saber-toothed cats. It lived during the Pliocene Epoch and probobly hunted Australopithecus, our ancestor! Deinofelis looked similar to the jaguar and probobly hunted in the same way; by biting its victims' skulls. Scientists believe it belonged to the Mairchondiditae, the same family that includes saber-toothed cats.