ruffed lemur

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A large, chiefly nocturnal lemur (Lemur variegatus) of Madagascar, having a black-and-white coat of long dense fur and a white ruff around the face.

Wiktionary

1. n. any of several nocturnal lemurs of the Vareica, from Madagascar; with white ruffs around the face.

GNU Webster's 1913

1. adj. (Zoöl.) a species of lemur (lemur varius) having a conspicuous ruff on the sides of the head. Its color is varied with black and white. Called also ruffed maucaco.