Ask any gardener and they will tell you that animal poo is something natural that really helps your garden grow. There is a whole industry dedicated to processing and sale of animal manure. Even zoos have jumped on the zero waste bandwagon by wrapping their animal poop into a product known as Zoo Doo or Zoo Poo. In nature plants and animals have worked out some symbiotic relationships. Perhaps none of these is quite as unusual as that between shrews and a type of pitcher plant that is also known as the toilet plant or the toilet bowl plant.