Pygmy marmoset monkey • • Earth Image Gallery

The Pygmy marmoset monkey (Cebuella pygmaea) is native to the rainforests of the western Amazon Basin in South America. With an average weight of 100 grams (3.5 ounces) and an average head-body length of 13.4 centimeters (around 5.3 inches), it is the smallest monkey in the world.

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