Animals as "Human Types"

Mark Mayerson has been posting scene breakdowns from Disney's "101 Dalmatians" over on his blog, and adding his analysis of story and characterization in addition to detailing who animated what. He's just gotten up to my favourite sequence: The "Twilight Bark", which leads us to the characters of The Captain, Sgt. Tibbs, and The Colonel. My reasons for liking this particular sequence so much is