Tarsius syrichta is a small brownish-grayish mammal. Their colors vary depending upon the region of the Philippines that they inhabit. Some have reddish-brown hair.
Body size is approximately 85 to 160 mm, with weights between 80 and 165 g. They are about the size of a young child's hand. They have a 25 cm long tail that is tufted at the end.
Tarsiers have large ears, resembling a bat, and round faces. The area surrounding their eyes is usually darker than their body, with no white marks anywhere on the face. The eyes are huge, and their vision is acute. In proportion to their body, their eyes are the largest among mammals. The tarsier's great hearing, coupled with their amazing sense of sight, make them highly successful nocturnal hunters. Their heads can rotate 180 degrees.
The legs and arms of these tarsiers are long and slender. Some of their digits have flattened nails and some have claws which are used for grooming. They have pads on their fingers and toes to help them cling to branches. Their legs are strong, and they are capable of jumping distances up to twenty feet.
Tarsiers differ from other prosimians in several characters. These include two grooming claws on each foot, lack of a toothcomb formed by the lower canines and incisors, and a diploid number of eighty chromosomes. Tarsiers are also less vocal than many other primates.
Range mass: 85 to 165 g.
Range length: 80 to 160 mm.
Sexual Dimorphism: sexes alike
Average basal metabolic rate: 0.43 W.
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