7Animals That Can Change Gender - Page 6 of 9

Snakes

Copperheads, cottonmouths, and other female snakes are capable of giving virgin birth. This is called parthenogenesis, meaning the female can fertilize their own eggs in the event that they do not find a suitable male partner during mating season. While this does not (technically) classify as a gender reversal, it does mean that some female snakes can carry out the reproductive actions of both a male and female while not a hermaphrodite.