I know! I don't like how they did it with Armour Rapidmon in one of the movies either! Terriermon just Armour Digivolved and Rapidmon had his neck guard closed already! I think it's just being lazy and not having t lip sync with the character.
Thanks! And haha, yeah, I always thought he was like a cyborg or something but nope, he's a dog-rabbit in armor. Too bad they never showed it during the series, but I guess keeping it covered gave them one less thing to animate.