crocodile skin caiman lying in the swamp of the pantanal wetlands along the transpantaneira

crocodile skin alligator animal animals black caiman brazil yacare crocodilian cuiaba river danger dangerous dragon eco tourism environment exotic fangs fauna jacare jungle lizard mato grosso natural habitat people person pantanal porto jofre predator protected reptile rio south america species spectacled sustainability swamp teeth travel destination tropical water wetlands wild