Board Thread:Speculation House/@comment-30936262-20170103115106/@comment-26397825-20170103115355

Cat Faunus have been seen to have retractable claws and tails as well, so ears are not a 'trademark'. He could simply have retractable claws like Tukson did, or his animal trait could be the massive amounts of hair he seems to have.

As for what kind of animal he is, a lot of us theorise that he is a panther (or black jaguar, as is their proper name), or perhaps a black cougar or puma.