Yes you can tame him on normal mode and someone actually did it on beta with a lot of help, but that wasn't the point of my post.
OP stated that all bosses had 14083 armor - and king dred has 10338.
No, he didn't:
All existing raid bosses in WotLK have exactly 13083 armor, on both heroic and normal difficulty.
Normal and heroic refers to 10-man and 25-man raids respectively.
Also, who even cares about the armor level of a 5-man boss? And thanks to the OP and Lactose, nice to have something like this documented.