alligator animal animals croc crocodile tears Crocodylidae eco forest gator hunter India jaws jungle krayker krokodilos marsh crocodile nature predator puddle reptile wild wild animal zoo aggressive crocodile Crocodilia Gavialidae Gharial Incredible India retile sharp teeth vicious amphibian carnivore danger darwin feed hungry jump killer large lizard massive mouth open river safari swim waiting water wide ambush calm Crocodylus palustris lying Pilikula quiet silent still wait african bask basking carnivorous cold-blooded coldblooded crock crocodiles crocodilian dangerous deadly hazardous lethargic lifeless maneatting menacing reptiles reptilian riverbank scales scaly tears threatening toothy ugly untrustworthy advice alert announcement appropriate-behavior appropriate-behaviour avoid be-careful beware black care caution communicating communication concern crocs directions information informing no-swimming not-allowed not-permitted permission-denied prohibited prohibition protect protection red risk risks risky rules safety sign signs swimming unsafe warning warning-sign white alligators caiman dinosaur everglades Florida gators leather swamp wetland wetlands