Genus Saimiri refers to a group of New World monkeys, commonly known as squirrel monkeys. These primates are mainly found in Central and South America's tropical regions, where they inhabit forests and riverbanks. Squirrel monkeys are small in size, with a body length of around 25-40 cm and a weight of 350-500 g. They have a distinctive fur pattern around their eyes, giving them a mask-like appearance. Some synonyms for Genus Saimiri include Squirrel Monkey Genus, Monkey of the American Tropics, and Tropical American Monkeys. These primates are incredibly social, living in troops of 10-25 individuals, and are highly active during the day. They are omnivorous, feeding on fruits, insects, and small vertebrates.