Today's animal is! Balbaroo fangaroo! Roufhly the size of a wallaby, It's an extinct quadrupedal kangaroo known only from some scatter skull fossils. It's most striking feature is it's elongated canines, which, unless some very impressive lips were present, would have been visible even when the mouth was closed.
http://alphynix.tumblr.com/post/162832629507/an-early-relative-of-kangaroos-balbaroo-fangaroo
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It lacks other structures in the skull associated with carnivores (such as the modified shearing carnassial molars) so it's more likely that the the canines served a function akin to the tusks of musk deer, in intra specific combat and breeding. Or some obscure as yet unthought purpose
