"Leo" is a lizard who has lived with his tortoise pal "Squirtle" in a school classroom watching the kids come and go over the years. They've actually become quite adept at on-the-spot evaluations of them - the spoiled ones, rich ones, lonely ones etc., and are a bit tired and cynical. A chance conversation gives "Leo" a bit of an headache - he may be about to die of old age! He is determined not to end his days in this glass cage, and when a disciplinarian supply teacher ("Ms. Malkin") decides that each child has to take a pet home for the weekend, he sees an opportunity to abscond! Needless to... read the rest.