Do you Remember Jurassic park? How the All male Dinosaurs became able to reproduce? According to the movie, the Scientists used Amphibian DNA(of Frog or something) while ‘re-Producing’ New dinosaurs, And according to ‘all famous’ Darwin’s law of struggle for existence, the male converted themselves to female so that they could reproduce and continue the race. Was that that easy? A male converting itself to female isn’t that simple to occur itself is it? There are many Hermaphrodites which can act both as male and female but changing sex doesn’t mean being an hermaphrodite, its converting a male into female.
In fact its not just the movie, Sex change is common in many amphibians, commonly in toads. Even the toughest of known toads, the cane toad, Bufo marinus, which is famed for indestructibility has found to be prone to sex change. According to American scientists, the male toads in intensively farmed land are changing sex. This is probably why the world’s amphibians are disappearing.