Re: Wombatnado
I think a lot of animals will do that, ie normal for wolves & dogs when hunting/herding. One of those curious things, like how they learn/inherit those skills. For wolves, they're sneaky, so pack using distraction so they can circle around and bring down their prey. For dogs, can be worrying, especially in breeds like collies where they can instinctively herd kids back to their human pack with a nip to the ankle.
As for wombats, I guess that's just Australia. They've probably dealt with all the larger predators, but still retain detailed files on potential targets.