The Philippine Tarsiers, (Tarsius syrichta) is very peculiar small animal. In fact it is one of the smallest known primates, no larger than a adult men's hand. Mostly active at night, it lives on a diet of insects. Folk traditions sometimes has it that tarsiers eat charcoal, but actually they retrieve the insects from wood. It can be found in the islands of Samar, Leyte, Bohol, and Mindanao in the Philippines.
The Philippine tarsier has a gray fur and a nearly naked tail. The middle finger is elongated. Head and body length are around 118-149 mm; It weighs 113-142 grams. Males are larger than females.
In comparison with his body size, the eyes of the tarsier are enormous. In volume, the capacity of the bony eye orbits, or eye sockets, is larger than that of the brain case, and also larger than its stomach. Their eye sockets have post-orbital closure rather than the postorbital bar of the prosimians. This feature keeps the eyeballs from being pressed against by the powerful temporal muscles to their sides.
The tarsier has a relatively very long tail (232 mm), generally naked except for a tuft of hair at its end. The underside has dermal ridges like those found on human hands and feet. Its tail is used for balancing like a tripod; they prefer an erect posture at all times.
Like an owl, the tarsier has a joint between its skull base and spine to allow head movement of a 180-degree arc. Its upper lip lacks a cleft yet, but still has muscles, so that it can make facial expressions. The adult brain weighs about 4 grams.
Tarsiers have sharp teeth, enabling them to catch their prey easier. Unique among primates, tarsiers have only two, rather than four, incisors in their lower jaw.
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