Back in Indigo Plateau (1st season), Pikachu declined a chance to use a Thunderstone.
When Gym Leader Lt. Surge was teasing Ash of being a "baby," Ash's Pikachu attacked Surge's Raichu, but Raichu knocked Pikachu out. Brock suggested that Ash use a Thunderstone that Nurse Joy offered, but Pikachu decided to grow stronger on his own without a Thunderstone, then Ash got the idea of teaching Pikachu Agility. Therefore, Pikachu may never evolve.
This makes sense, since there was another Trainer who rivaled Ash in Hoenn and had a Meowth with the same story: it lost to a Persian once and then hated all Persians since then.
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If u put him/her in the day care he/she wont evolve
Pikachu do not evolve by level. They evolve when a thunderstone is used on them.
Pikachu will evolve into Raichu when given a thunder stone. If you mean Ash's Pikachu, then it very unlikely he will evolve his Pikachu, as Pikachu is the Pokemon Franchise's mascot.
Yes. When Pikachu has enough happiness, level it up then it should evolve. Then you can evolve Pikachu by using the Thunderstone to evolve Pikachu too Rachui. Remember: Rachui CAN NOT EVOLVE.
No, sorry