As context to your context:

The genitalia of the female closely resembles that of the male; the clitoris is shaped and positioned like a penis, a pseudo-penis, and is capable of erection. The female also possesses no external vagina (vaginal opening), as the labia are fused to form a pseudo-scrotum. The pseudo-penis is traversed to its tip by a central urogenital canal, through which the female urinates, copulates and gives birth. (Source)

scientists state that female spotted hyenas are the **only ** non-intersex female mammals devoid of an external vaginal opening, and whose sexual anatomy is distinct from usual intersex cases (source)

Because hardly any other animal would give birth through a clitoris. That was the weird part for me because I knew about the peniform clitorises but not the missing external vaginas.