These timid, forest-dwelling animals have long, rough fur. Most of their coats are a combination of white to pale gray fur with dark brown or black markings on the face and body.

They have small ears, long whiskers and a densely furred tail. Their large hind feet and long claws make them excellent climbers.

Most information about northern Luzon giant cloud rat reproduction comes from animals in human care. Births have been recorded every month of the year, except January, March and May.

Cloud rats give birth to one young each year, which is typically birthed in the hollow of a tree or a hole in the ground. The mother carries her young firmly attached to a nipple.

Although giant cloud rats are widespread and locally abundant, population stability is threatened by the destruction of forest habitats and hunting for food.

This species is legally protected from hunting, except by indigenous people using traditional hunting methods. Giant cloud rats are found in several national parks and other local protected areas.