Leonardo Araujo, 12, swims with a "Boto Cor-de-Rosa" (Pink River Dolphin) during a Bototerapia (pink dolphin therapy) session in the Negro River in Novo Airao city, northern Brazil July 26, 2010. The therapy involves swimming with the "Boto Cor-de-Rosa" (Pink River Dolphin), in the belief that the ultrasonic waves emitted by the dolphin will help cure a range of health problems, according to physiotherapist and Bototerapia creator Igor Simoes. Araujo, who could not walk before the treatment, says his physical capabilities and self esteem have improved greatly since the therapy. Picture taken on July 26. [Xinhua/Reuters]