Pygmy Marmosets weigh just 0.4 - 0.5 ounces when they are born, and when they are grown, they weigh just 3 - 5 ounces! In fact, they are the smallest monkeys in the world.
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Pygmy Marmosets weigh just 0.4 - 0.5 ounces when they are born, and when they are grown, they weigh just 3 - 5 ounces! In fact, they are the smallest monkeys in the world.