Their extremely long tails, which can reach 135-275m in length, are naked except for tufts of hair at the end. Their fingers are extremely long and have pads on their fingertips. Their membranous ears are slender and almost bare. Reproduction Tarsiers reach sexual maturity at the age of one year. Their gestation period, which lasts approximately six months, is unusually long for such a tiny animal.
Tarsiers give birth to a single offspring that is born precocial, fully-furred and with opened eyes.
Birth weight is approximately one fourth of the mother's weight, 20-31 grams. Babies are active on their first day of life and after 42 days they are ready to begin hunting. Behavior The tarsier has many physical characteristics that aide in hunting. Tarsiers' huge eyes help this nocturnal animal see in the dark. The sensitive ears, superficially similar to those of bats, are in constant motion.