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.
Males do not lay eggs, females only do and for the eggs to be viable they will need to mate with a male yes.
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.
no --teamhoyt
Turn it over and have a look
A male shall stick his penis into a female's vagina. The male would release his semen. The female's vagina would turn red. In 3 days the female shall release her period, then the male would rub it on his penis. then, the male and female would have sex for exactly 10 hours, then their cheeks would turn slightly pink. After a week, the female should rub her boobs on to the male's chest while laying down Craving Chocolate Ice Cream.