Question

Does a nature of a Pokemon changes when evolving ?

Answer 1

Of course not !Never!because that is the mechanism of the game and because the character
of a Pokemon is written deeply in its heart.

Comments

thanks for BA!

Answer 2

No, a Pokemon will keep it's nature for the whole time you have it.

Source-Personal experience.

Comments

so it changes when the pokemon evolves

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sorry....did a mistake.It does not change.