During an Australian expedition of a young cancer patient, I met a group of their dogs in the wild all day. And it was here that the man's dog met a kangaroo that would have ended very badly.
The man was horrified when he saw a kangaroo clutching his dog with a suffocating fist and approached without hesitation. He knew he had to do something to ensure the safety of both animals involved. But the kangaroo continued to hold on to its two strong arms until the man approached, then turned his attention to him.
Being attacked by a kangaroo wouldn't be a good thing, so when the kangaroo showed that it didn't want to let go of all of this, the man did what he had to do and hit the animal with his fist. It wasn't enough to cause real damage, but it succeeded by making the kangaroos detach and run away.