The Nemo fish with orange white stripes are hermaphrodites – born one sex but able to switch to the other if necessary.
Bright yellow in colour, these wormlike mollusks are simultaneous hermaphrodites, meaning they don't change back and forth, but use their male and female reproductive organs at the same time.
Some cardinals have bilateral gynandromorphism – which has nothe male and female feathers.
Frogs can change sex spontaneously complete with fully functioning reproductive organs.
Some female snakes, such as copperheads, are capable of virgin birth, or parthenogenesis, meaning the female fertilises their own eggs without a male sexual partner.