Lets have a look back through the lens of time.
dil-do-dop-dil-do-dop-dil-do-dop ~waves fingers~
5+1 hit dice of Armor Class 6 terror. Sure, the claws only do 1-4 damage. The tail?
Not the best part. The best part?
Special Attacks: 20% chance of double stroke with the tail
It's like a lottery where the Dungeon Master wins player corpses!
It is "Somewhat mammalian" and has steel-grey thick stiff fur, that blends very well in your "average stone-made dungeon" but is valueless, because for some reason, it's immune to being skinned. Those crafty DM's.
Dragon Magazine #27 page 41