I figure it's time I stop being annoyingly silent on an issue many have asked about and confirm that yes, I'm listening:
As many have, rightfully, pointed out I've been rather inconsistent with depicting Seath's size. I've had him small enough to be able to fit in spaces only normal sized folk and ponies would be able to fit in, yet also big enough to tower over everyone else with no mention of how he's able to do both simultaneously.