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Dolphin-Assisted Therapy (DAT) is an increasingly popular choice of treatment of illness and developmental disabilities by providing participants with the opportunity to swim or interact with live captive dolphins. Two reviews of DAT (Marino and Lilienfeld 1998 and Humphries 2003) concluded that there is no credible scientific evidence for the effectiveness of this intervention. In this paper, we offer an update of the methodological status of DAT by reviewing five peer-reviewed DAT studies published in the last eight years. We found that all five studies were methologically flawed and plagued by several threats to both internal and construct validity. We conclude that nearly a decade following our initial review, there remains no compelling evidence that DAT is a legitimate therapy or that it affords any more than fleeting improvements in mood.