13.) “Dinosaurs,” “Changing Nature” (1994)

Is there any family sitcom out there that simply ends with the death of everyone on the show? The dinosaurs did not take care of their planet; their plan to stop volcanoes with rain backfires and the temperature of the planet drops to a rate at which none of them will survive.

The closing scene features the Sinclairs huddled in their living room, awaiting their inevitable end. Surely, this was the show’s writers attempt to push environmentalism onto children — but even so, killing off everyone on a show geared toward a younger audience is bleak.