Nick Redfern has a new Mysterious Universe article on this mysterious creature, called the Wakki. This also isn't your average giant bigfoot. It's actually a lot smaller.
Here's how Redfern's article starts:
"There is no doubt that Australia's most famous cryptid ape is the Yowie. It resembles Bigfoot in both size and appearance to an incredibly close degree. It stands around seven to ten feet tall and is covered in a thick coat of hair. Far less famous, though no less fascinating than the Yowie, is Australia's Wakki, also known as the Njmbin, the Junjudee, the Waladherahra, as well as by many other names, depending on the relevant Aborigine tribe that tells of its existence.
"Like the giant Yowie, the Wakki (as Richard Freeman notes in Orang-Pendek: Sumatra's Forgotten Ape) is covered in hair and walks upright. It rarely, if ever, however, exceeds five feet in height. Two, significantly different, unknown apes in Australia? It may sound unlikely, but read on."
You can see the rest here.