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How do the Pygmy Marmoset Monkeys look?:
 * they are the smallest monkeys in the world (there are some primates that are a bit smaller)
 * The body weight of an adult Pygmy Marmoset is averagely 4 ounces

How do the Pygmy Marmoset Monkeys act/ behave?:

What do the Pygmy Marmoset Monkeys