Proailurus was a prehistoric carnivore that lived in Europe and Asia approximately 25 million years ago in the Late Oligocene and Miocene. One recent phylogeny places it as a basal member of the Feloidea, the superfamily that includes mongooses, civets, hyenas, and cats; but other studies suggest that it instead was a felid (a true cat). Proailurus was a compact and small animal, just a little larger than the domestic cat, weighing about 20 lb (9 kg). It'd a long tail, large eyes and sharp claw… (More on Proailurus)