There is a huge variety of mammal species living
in different types of forests. They range from the tiny, mouse-like shrews scurrying along the forest floor, to acrobatic
primates in tropical rainforests. Many forest mammals are excellent climbers, and make use of trees for food, shelter, and travel routes.
Mammals are often nocturnal, and almost all have a fear of humans, which makes them difficult to observe. Forest mammals are shy and difficult to view, even in the tropical rainforests where they are most abundant. Large mammals require a larger territory, and therefore fewer of these mammals can share any given amount of forest.
Monkeys are some of the most common arboreal mammals, with several dozen species in the tropical Americas alone. Not all monkeys are large and easy to spot, however: the marmosets are some of the world's smallest primates, and the pygmy marmoset weighs only 3 ounces (185 grams).
[tropical rainforests] [arboreal adaptations]
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