Barbourofelis fricki, meaning "Barbour's Cat", is an extinct genus of carnivorous mammals belonging to the family Barbourofelidae (false sabertooth cats) that lived in North America from the Late Miocene until the Mid Pliocene. Despite it's very cat-like appearance, Barbourofelis wasn't actually a felid but had evolved along similar lines to cats, closely resembling the much later Smilodon. It was around the size of a lion but, in lamen's terms, was built like a brick shithouse, having a build that more closely resembled Ursids than Felids. Like the unrelated Thylacosmilus, Barbourofelis had "sheaths" on their lower jaw that protected its massive canines when its mouth was closed, keeping them sharp. Unlike cats, this animal had a semi-plantigrade walking stance much like a bear. It is theorized that Barbourofelis went extinct due a combination of competition from bear-dogs and climate change caused by the incoming glaciation.

THE CRIMSON CHIN

Kick their legs out from under them

Carnotaurus sastrei, which means "Flesh Bull", is a genus of abelisaurid theropod dinosaur that lived in South America during the Late Cretaceous. It was a large animal, measuring around 30 feet long and weighing around 1.5 tons. Carnotaurus is the only known theropod (not to mention the only biped ever) to have a pair of thick brow horns, which were most likely used in both mating displays like modern bighorn sheep/bison and as last-resort weapons, as they were covered in a horny sheath in life like modern bovids and contemporary ceratopsians. Like other abelisaurs, it also had puny arms (the fingers were attached directly to the forearm bones and didn't even have claws on them), about on par with the wings of modern emus and kiwis in terms of functionality. Despite its large size, Carnotaurus was terrifyingly fast due to specific adaptations in its thigh bones and tail vertebrae: scientists have calculated that it could run at speeds of up to 35 miles per hour.