With crocs , you can sometimes afford to make a mistake.
It's dangerous, not only for us, but for the crocs - but the payoff in terms of scientific data can be huge.
Attacks usually happen in the evening, when the humans aren't looking for half submerged crocodiles, but the crocs are on the lookout for a meal.
The 4ft long Cayman crocs were in a tank in the house.
Marine crocs were abundant during the Jurassic period some 200 million to 145 million years ago.
In some places people use crocs as a food supply.
‘I never saw any big crocs but there were giant footprints,’ he said.
Saltwater crocs have a bit of a reputation - for eating people, that is.
Humans certainly aren't their primary prey, but enough people have been killed by crocs to instill a healthy local fear for the animals, which also prey on livestock.
While the crocs fight for their existence in the wild tens of thousands of them live on farms in Thailand, Cambodia, and elsewhere.