This documentary follows a group of adventurers into the Amazon jungle to catch animals to be shipped to zoo's in the USA. The ease in which the hunters catch the animals and how quickly they become tame once in captivity indicates most of the footage shot in this film was rehearsed. One sequence where one of the adventurers battles a boa constrictor is obviously staged. One scene the narrator describes a caiman as an alligator, even though alligators are native to Florida and China and not Brazil. The title comes from the local word for caiman, in which the film describes as the "terror of the Amazon." This is quite an exaggeration, while any large member of the order crocodilia is potentially dangerous, it is the true crocodile that is responsible for most man eatings in South America and not species of the caiman family.