Wild animals are not called wild for a reason, even the domesticated ones misbehave on occasion. The guys who get killed are people who do not have any kind of training, you rarely see a naturalist or a zoologist get killed by a wild animal. Why? Because they don't treat them as their pets, they keep their distance until the animal let's them know he is in a social mood, most important of all they can read it's body language and know when it's time to back off.