"TIL Pokeballs shake on the battle screen when they're about to level up in HGSS"

I was playing Heart Gold this morning when i noticed that two Pokeballs were shaking on the battle screen. I always assumed the shaking just indicated which Pokemon was out but that couldn't be the case since the Pokemon I was using was first in line and the Pokeballs that were shaking were in the middle. I looked it up and it turns out that it means those Pokemon will (i think) level up by defeating the current opponent. Just a neat little thing i never noticed, I assume this is also in D/P/Pt since they share pretty much the same interface, but idk. via /r/pokemon http://ift.tt/2fVXs2b