RE: Red foxes (Vulpes vulpes) were introduced to Australia for sport hunting in the 19th century, but ended up being responsible for the extinction of several native species, including the desert rat-kangaroo (Caloprymnus campestris)

[valth]

That's very cool! I've only seen them in my garden once, but a few times in the forest as well. They are incredibly beautiful animals.

I actually wrote a post about the musk ox on Dovre a while back. Sadly I don't know if it has any consequences in either direction, but I would assume that it has affected the other wildlife in the region to a certain extent.