Here is a rare recording from Columbia's "Tough Series" – a turn-of-the-previous Century equivalent to "parental guidance suggested".   Also marketed as "Scenes from life", these skits were often of various fight or odd, humorous circus side show scenes.   Catalogs would describe the fight records as "very realistic".   Most were performed by Len Spencer.

Compare this dog fight recording with Spencer's Clancy's Prize Waltz Contest comic sketch.   Spencer uses the same comic technique in laying down the event's rules – although here the dogs grate his nerves (and get in the last 'word').