they get visits once a week by a team that weighs them, checks their vitals, gives them re-charged batteries and new video cards, and takes their used up batteries and their recorded video. It takes a long time to get info about the show. It's dribbbled out here and there over dozens of channels, and forums, spread out over years.
aha. that's something that always puzzled me given the frigid weather. also explains why there's a "minimum" of accidents, disease etc.
enjoy watching those shows. given there's only snippets of the real complete picture. their individual personalities usually show through sooner or later.
