IN THE KNOW: Philippine Tarsier
The Philippine tarsier (Tarsius syrichta) is one of the smallest known primates in the world. No larger than an adult person’s hand, its size ranges from 118 to 149 millimeters (4.6 to 5.8 inches) while its average weight is between 113 to 142 grams (about 1/10 of a kilo).