|Possible Population||Unknown, possibly large|
The Yowie is described to be around 7 to 9 feet tall, with a large red mouth and talon-like claws according to Aboriginal legends. It is also noted that the Yowie contained two large fang-like canines which distinguish the Yowie from other Bigfoot species. It usually has brown or reddish fur.
Like most Bigfoot species, it is theorized that the Yowie descends from an ancient ape called Gigantopithecus Blacki. While the Giganto-Bigfoot theory may be valid, it is highly unlikely that the Yowie descends from the same Asian ape, as creatures from Asia never made it to Australia due to sea depth and vice-versa, creatures from Australia never made it to Asia. This separation is marked by the Wallace Line. Another theory is that they may be living Homo erectus, the presence of which in prehistoric Australia is suspected but not proven; or a particularly primitive tribe.
As no placental terrestrial mammals are known to have naturally existed in Australia, some cryptozoologists theories that the yowie could be some form of bipedal marsupial, such as a descendant of the New Guinean Hulitherium.