How do the Croc Docs, a team of Florida scientists who wrangle crocodiles and alligators, stay safe? 'Very carefully.'

• University of Florida's Croc Docs are a team of biologists who study crocodilians and other reptiles.
• Frank Mazzotti, the original Croc Doc, said safety is key and that they virtually never get injured.
• Still, he said it's like operating a nuclear power plant: "There's no room for error."

In his more than 40 years of monitoring crocodiles in Florida, Frank Mazzotti has one early memory that especially stands out.