The boa constrictor is a non-poisonous tropical snake belonging to a specialized group of reptiles - the first vertebrate class completely independent of water. Found in Central and Southern America and often reached lengths of up to 4 m (13 f). They belong to the same family as the python and anaconda, which reach lengths of up to 9 or 10 m.
Some boas live in underground holes while others live in trees. Their prey consists mainly of birds and small mammals such as rats and agoutis. Boas size their prey in their jaws, then entwine them in their coils and kill them by suffocation.
Boa constrictors live 10 - 20 years in the wild and up to 40 years in captivity.
Spectacled Caimans are common, meat-eating reptiles that spend most of their lives in the water. They swim very well, mainly using their tails to propel themselves through the water, and also using their webbed feet. Spectacled Caimans are nocturnal (most active in the evening) and has the widest distribution of any species in the Alligator family.