old yeller vs. cujo

the current subject in my "themes for today" class is louis pasteur and the invention of the rabies vaccination. i wanted to get them to understand rabies a little bit more and maybe get some fun out of it, so i was thinking of showing them parts of old yeller. unfortunately, i can't find old yeller in stores or anywhere to download onto my computer... so what if i showed them cujo instead? old yeller and cujo are both feel-good movies about loveable rabid dogs- and they both die in the end (sorry if i spoiled it for anyone who hasn't seen these movies/read the books, but you knew it would happen). they're basically the same story, right?