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Xenopus are a major, non-mammalian laboratory animal model. They are a hardy, long-lived and fully aquatic amphibian species. Under laboratory conditions, they can lay eggs year around, thus providing researchers with a steady supply of biological material. Xenopus are used to study vertebrate embryology, cellular biology, biomedical-physiology, toxicology and biochemistry. My research focuses on the biology, health and disease of laboratory Xenopus. Stanford undergraduates and veterinary residents participate in Xenopus research projects on topics ranging from infectious disease, parasitology, husbandry and housing, to animal welfare and behavior.