The most spectacular is the anaconda which can measure 9 metres. The amphibians are best represented by the frogs many of which are brightly coloured, a warning that they are poisonous to eat. They are very vocal, and their songs permeate the forest. An unusual amphibian of the tropics is the blind salamander that has no legs and lives under logs and moss like a giant worm. Many mammals thrive in the rainforest and bats are among the most common.
Rodents are almost as numerous as bats.
The capybaras is found near rivers and is the largest rodent in the world. It is almost as big as the pony-sized tapir. Both these animals are the natural prey of the jaguar the largest South American cat. Other rainforest cats include ocelot, margay and the largest of them all, the tiger. The rainforest is home to monkeys and apes.