The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
Unfortunately, there isn't a dire moose in the index. An ordinary moose, yes (in Dragon #327 and Bestiary of Krynn, Revised), but no dire mooses. I agree that the MMII's Dire Elk is probably the closest match in an official source.