In mammals, all intact developmentally typical males have a penis, but the clitoris in the females of the following species is sufficiently enlarged that it is usually termed a pseudo-penis: spotted hyena, juvenile fossa, binturong, lemur and spider monkey. The enlarged clitoris in the fossa is supported by an os clitoridis, a bone similar to the os penis found in most mammals. However, the fossa's os clitoridis and pseudo-penis shrink as the juvenile female grows, unlike that of other pseudo-penis species.