Marmoset Habitat Welcome to the habitat of the marmoset monkey.
Marmosets live in the trees in the jungle as far north as Panama and south to Brazil.
These animals are approximately the size of a rat and weigh less than a pound. They are arboreal, which means they live in trees. Scientists tracking wild marmosets must have their binoculars handy and be ready for sore neck muscles-unless they're good at climbing trees. Such as communicating who they are. Even though their sight is very good, marmosets and tamarins use smell to identify themselves to each other.