It has large ears and eyes, a long tail and rusty-brown fur, and it feeds mostly on insects and seeds.

This description is based on mice captured during a biological survey conducted in 1994 and 1995 high on the steep slopes of one of the island's volcanoes.

In April, 2006, the new mammal, a Philippine forest mouse, now identified as Apomys camiguinensis was captured on the steep slopes of a volcano of Camiguin during a biological survey by Heaney and Tabaranza.

In 2002, Heaney, Tabaranza, and Eric Rickart (from the Utah Museum of Natural History), described a different species of forest-living rodent, Bullimus gamay, from Mt.

A frog (Oreophryne nana) named in 1967 had been thought to be the only vertebrate restricted to the island prior to the surveys by Heaney and Tabaranza.