Within the biology department at Washington University, the primary focus of the Losos Lab is on the behavioral and evolutionary ecology of lizards and the study of evolutionary adaptation of wild species to urban habitats. Major questions concern how lizards interact with their environment and how lizard clades have diversified evolutionarily. Addressing such questions requires integration of behavioral, ecological, functional morphological, and phylogenetic studies. A major focus has been the evolutionary radiation of Caribbean Anolis lizards, but other lizard radiations are also being studied. A newly-developing line of research concerns whether and how species are adapting to urban environments.