An introduction to the structure, ecology, behavior, and evolution of all major animal groups, including poriferans, molluscans, annelids, arthropods, echinoderms, chordates and more. Protistans, the origin of multicellular forms, and environmental and anthropogenic factors affecting animals also are considered. Credit hours: 3. Prerequisite: BIOL 1100L and either BIOL 1103 or 1108; or the equivalent. Corequisite: BIOL 2201L.