The mouse lemur is the smallest primitive monkey, also known as the smallest primitive monkey in the world. It is a genus of mouse lemur in the order of primates, family Monidae (or family Lemuridae), and is an arboreal animal. The body length is about 12.6 cm, the tail length is about 13.2 cm, and the weight is 40 to 100 grams. The weight of adult monkeys varies with the seasons, but it is usually around 60 grams. Those born in the northeast are smaller and darker in color than those born in th