Read the Wiki about it, it is VERY rare for vertebrates to be hermaphrodites.
"A hermaphrodite is an organism having both male and female reproductive organs. In many species, hermaphroditism is a common part of the life-cycle, enabling a form of sexual reproduction in which partners are not separated into distinct male and female types of individual. Hermaphroditism most commonly occurs in invertebrates, although it is also found in some fish, and to a lesser degree in other vertebrates."
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There is an incredibly small possibilty of a bunny, or a human, to be born without a distinct gender.