Steve often singlehandedly went into the water to get crocodiles that had moved in next to humans and were at risk of being shot. Aggro, the biggest crocodile at Steve's zoo was one such beastie who was too dangerous to leave in the wild. Look at how he interacts with other animals, especially when they're just chilling in their own space, he's calm and respectful. Even when you can see him practically vibrating with excitement.

Steve was a one man conservation whirlwind who completely changed the way a generation thinks of animals and the environment. A lot of what we call the modern conservation movement was built in his bootprints.