Addendum

Less sassy than their owners that is, not than the town guard or the stuffy noble who's about to get the starch taken out of those ruffles. Shouldn't be starching his ruffles anyway. What's this clown think he's doing?

Reason Corner

Thinking about it, shouldn't animal companions and magical weapons be less sassy on average? They don't need to accrue social status at the expense of their peers.