They will bite out of defense and they can take a finger. They don’t typically target humans until they are older. Nile crocodiles will hunt humans if they have done it in the past. They know humans are an easy food source
Snakes are usually pretty safe just don’t try to handle or move them. Saltwater and Nile crocs are the dangerous ones. Caiman and American Crocodiles usually won’t target humans. Neither will alligators. I breed snakes 😂