However these snakes, while they might seem scary, are hardly ever visible to humans as they prefer to stay away from human habitation, instead sticking to rivers and other water-based habitats.Īnacondas are useful in keeping the numbers of certain predators under control, such as caimans. It can weigh hundreds of pounds and is capable of taking down a jaguar if it grows to be large enough. The Green Anaconda is known as the world's heaviest snake and is native to Trinidad and Tobago. Did you know? The largest snake in the world (in terms of weight) is a Trini.