No, but some people are born intersexed and when puberty comes their bodies start changing to the sex that they were assigned when born. They are few and far between, but there are medical histories of children who appeared to be male, but upon hitting puberty starting experience female growth i.e. breasts and more.
No male duck will ever turn into a female duck.
Yes, in spring when there are no female frogs, male frogs turn themselves into female to breed.
Female rats don't just turn into male rats. Sometimes a male rat's testes will be withheld in his body as a result of stress and he will appear to be female. Of course in such a situation, he is still male.
Yes a parrot fish female could turn into a parrot fish male it changes gender and color :}
goldfish start out with female and then turn into male!!!!!!
No the egg turns into a female togepi
clownfish are all born males and the dominant male of a group will turn female when the female of that group dies.
Yes!
Yes. Female humans can get moody when they are in season and so can female dogs.
Turn it over and have a look
no --teamhoyt
the male slowworm is darker then the female. the female is brighter underneth then the male sloworm.