Join Mr. DeMaio and his pals Iguana Greg and the Macho Crab in this fun science lesson for children on vertebrates and invertebrates. You will meet two of Mr. DeMaio's friends, a strange iguana and a familiar crab, as you discover cool facts and information about these two animal groups. Please consider contributing to my Patreon. Doing so helps me make more videos like this! Patreon: https://www.patreon.com/mrdemaio