The Orinoco Delta's wildlife exhibits considerable variety. Six species of the cat family inhabit the forested interior, including jaguars, ocelots, pumas, and margays. Several types of monkeys also live in the Delta, among them howler and spider monkeys, long-tailed capuchins, and nocturnal douroucoulis.
Among the more unusual species are tapir, which are large, cloven-hoofed quadrupeds with prominent snouts. Herbivorous manatees are aquatic mammals that survive in the coastal estuaries. A wide range of reptiles inhabit the small caños, lagoons, and swamps, including caimans, alligators, lizards, and several species of turtles. Many types of snakes are found in the interior, including such venomous species as coral snakes, rattlesnakes and such no venomous varieties as boa constrictors and anacondas.
Birds, both migratory and no migratory, are plentiful and diverse. The coastal swamps are the tropical venue for migratory cranes, herons, storks, and ducks. There are vast ibis colonies in the Orinoco mangrove delta, and bellbirds are prevalent in the Orinoco basin's forests. Birds of prey, Pelagic and coral reef fish are plentiful along the delta of the Orinoco, and the deltaic channels foster molluscs and shrimps. Swarming freshwater species in the interior rivers include electric eels and piranhas. A wide array of catfishes are caught for food.
A massive variety of habitats has arisen within the delta, both terrestrial and aquatic. Mixed tropical rainforest, dominated by towering palm trees, the mangroves and the Moriches are found around a variety of flora including fruit trees, orchids, bromelias and farns.
The Warao are an indigenous people inhabiting eastern Venezuela and western Guyana. Alternate common spellings of Warao are Waroa, Guarauno, Guarao, and Warrau. The term Warao translates as "the boat people", styling after the Warao's lifelong and intimate connection to water. Most of the approximately 18,000 Warao tribesmen inhabit Venezuela's Orinoco delta region, with far fewer numbers in neighbouring Guyana and Surinam border. They speak an agglutinate language, also called Warao.