I just don't believe people can tame animals.
Some days you tame the tiger, and some days the tiger has you for lunch.
Any time you're working in the world of taming animals, you're going to get hurt. But it's a rush that we get.
I cannot harness a horse. I am afraid of a cow.
Most exotic animals are not particularly interested in people, which makes it hard to provoke them. Human-rearing gets them used to and sometimes imprinted on humans, which makes them potentially dangerous.
The reason why feral kitties are hard to tame is because they have missed socialization the period - you need to be touching and petting those kittens when they are real young.
The wildest colts make the best horses.
A fly is as untamable as a hyena.