Here's an interesting link -

Appears to be a series of photos taken while the Film Crew was inside the Nevada State Prison shooting one of the Cell Dog shows...

The actual site is for one of the Sound Techs;
but there's a *clicker* on his home page that starts the Cell Dogs photo series.

Scroll DOWN in the larger, right-hand panel till you see
the Cell Dogs photo - then CLICK on it...

"TV Soundman" site >> Cell Dogs Photos