howler monkeys alouatta monotypic in subfamily alouattinae sitting high in the trees of the pantanal wetlands

howler monkey alouatta monotypic noisy mato grosso pantanal alouattinae loud howling primate howl yell ape rainforest sound family people person travel destination tourism eco environment natural habitat tropical exotic forrest jungle forest tropics annoying sustainability species protected protection wetlands swamp fauna endangered wildlife wild mammal animal tree black nature