Is there any way to find out the Nature of a Pokemon before catching it?

Question

Before catching it

Comments

I didnt find this one..

Answer 1

No, not unless you somehow hack your game so that you encounter only Pokemon of a certain nature.

Source#1

Source #2: It is kind of common knowledge

Comments

oh.. too bad. Source btw?

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No source is neccassary, there simply is no way.