In spotted hyenas (Crocuta crocuta), females are larger than males and have an enlarged clitoris that resembles a penis (it's often called a 'pseudopenis'). They also have 'pseudotestes' - fatty lumps in the lips of the vagina that resemble testes. These fuse the lips together, and females of this species are obliged to urinate, mate and give birth through the clitoris. These unusual adaptations led to people once thinking these animals were hermaphrodites, but this is not the case. Here's an image:
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Note that the other two hyena species, the striped and brown hyenas, and their relative the aardwolf, do not have these unusual features. In these species, males are larger than females, and females have 'normal' genitalia.