Slap, to be fair, he raised money for conservation, esp the crocs. He was an avid opponent of poaching. What was interesting about him was that he had practically no zoological training, officially. He learned from his dad. His enthusiasm arguably charged some kids who will do good stuff.
Plus the way his wife was portrayed on the show was old school.
I didn't like the dog in the boat with the croc though. The dog was definitely NOT happy.