Gorilla is the name given to a Generation 3 1998 Furby. It is sometimes mistaken for other names because of his generic like coat and colors. The Gorilla Furby has a tail and is black with a brown face plate and tummy. It also has black ears that are brown on the inside.
Videos
A video of a Frog Furby and a Gorilla Furby by Anush Yaranushian on YouTube
Gorilla Furby Demo by The Purple Ender Eye on YouTube