Will Save World for Gold/WMG

The one word left out of the Cows' statblock is...
Common. The cows, and by extension the bull, speak common.

Ardon will eventually find a way to get back at the dwarf shopkeeper.
He's clearly not above such a thing, and he's displayed a certain... sadistic cleverness in the past. Possibly as a Brick Joke 15 levels from now, or possibly with a somewhat clever pseudoplan, as with the old questgiver with the +2 Jam.