In this episode Ed is joining a Louisiana research team which is studying alligators to find out how they manage to heal themselves after the vicious injuries they receive in both territorial and mating fights. The problem is that in order to study the immunology of alligators you’ve got to collect blood samples – and gators don’t surrender their blood without attempting to get some of yours back in return. Ed claims to love animals, let’s see how he deals with six foot swamp gators!