siamese crocodile resting quietly near the water

africa aggressive alligator alligators amazon ambush amphibian animal blooded caimans cambodia carnivore carnivorous crocodile crocodilia crocodylus danger dangerous endangered excellerate fresh freshwater gavialidae gharials hunter leather mammal mangrove marshes nature near power predator prehistoric quietly reptile resting river siamensis siamese skin species streams swamp tail thailand threatened tropical water wild wilderness wildlife