The audio track is present but not analyzed in detail. It is likely a simple stereo or mono audio stream, possibly with a relatively low bitrate.
The file extension ".mpg" (or MPEG) indicates a digital video format that became popular in the late 1990s and early 2000s. The existence of "Color Climax Animal Tricks.mpg" represents a specific moment in internet history: the digitization of vintage physical media. Color Climax Animal Tricks.mpg