Digimon and Pokemon: A middle of the night musing.

[Mute Point]

In Pokemon Yellow the starter Pikachu that followed you around showed emotion if you talked to it. And in all of the games from gold/silver/crystal onward there is a happiness rating that you can't see, but increases the power of certain moves, and causes some pokemon to evolve.

I'd also point out that the digimon in the games I've played don't show much emotion at all.