Do EVs reset after a Pokemon levels up?

Question

E.G. If a Pokemon has 252 EVs, and it levels up will it keep the EVs, or will they reset to zero?

Answer 1

No, they keep it. Unless, you hack them to :T

Source: Experience

Comments

OK, that's a relief.

Answer 2

The ONLY WAY a Pokémon's EV ever go down after it obtains some is if you give it a EV-reducing Berry. Otherwise, NO, leveling it up will not reset its EVs.