In high school I had a girlfriend with a pet chicken. It friendlier than most cats. I wonder if she could have tamed a Casowary?
https://www.youtube.com/watch?v=8jB2QFmXUCo
They’ll stalk people to drive them out of their territory.
https://www.youtube.com/watch?v=zUQDA48tQhs
Here is one that I saw at a theme park. During one of the shows, it was much more ornery than you see in this show, and would jump up to claw the guy and he’d push it back whenever it jumped, knocking it off balance enough that it couldn’t reach him to slash him.
https://www.youtube.com/watch?v=f011zAbc7es