Probably, or perhaps it looked enough like a predatory dingo that the ‘roo preempted a perceived attack?
But knowing dogs, I think it was apt to run at the ‘roo yapping all the way.
Maybe the ‘roo had a headache and just wanted the noise to stop?
:)
Maybe he told the dog, “You’ll ROO the day you messed with me.” (Sorry, I coudn’t resist.)