I'm re-watching the police academy episode, and my favourite character is Fenwick (the Walter Matthau lookalike dog). He's not credited (even though he does have a line) and he's not actually in a scene with anyone else, so I was thinking either it was stock footage or maybe just a dog they had on set or something. Is there more info about him anywhere, maybe the dvd commentary?
This is the best pic I could find: 🐶