The Calamian treeshrew (Tupaia möllendorffi) is a treeshrew species found in the islands of Busuanga and Culion, which are part of the Calamian Islands group in the Philippines.
The northern treeshrew was one of 16 mammals whose genomes were sequenced by staff of the Broad Institute, which released a low-coverage assembly of the genome in June 2006.
A study of the treeshrew in Malaysia found that it spends several hours consuming the equivalent of 10 to 12 glasses of wine with an alcohol content of up to 3.8% every night drinking naturally fermented nectar of the bertam palm.