Its major predator was said to be the Sasquatch, a mythical creature said to inhabit the same region, as well as bald eagles and cats.

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from See also of https://en.wikipedia.org/wiki/Drop_bear

The drop bear (sometimes dropbear) is a hoax in contemporary Australian folklore featuring a predatory, carnivorous version of the koala. This imaginary animal is commonly spoken about in tall tales designed to scare tourists. While koalas are typically docile herbivores (and are not bears), drop bears are described as unusually large and vicious marsupials that inhabit treetops and attack unsuspecting people (or other prey) that walk beneath them by dropping onto their heads from above.