Cheek Pouch restores 33% of the Pokemon’s maximum HP when it consumes a Berry, after the effect of the Berry is applied.
Cheek Pouch activates even if the Pokemon eats another Pokemon’s Berry via Bug Bite, Pluck or Fling, but only if the Berry is actually eaten for an effect (for example, eating a Payapa Berry via one of these moves will not trigger Cheek Pouch). Consuming a Berry through other means (such asNatural Gift, using Fling, or its Trainer giving it a Berry from the Bag) will not trigger Cheek Pouch.
Outside of battle
It is unknown if Cheek Pouch has an effect outside of battle.
Pokemon with Cheek Pouch