Brazil Ball Dogs

Tennis players Gastao Elias, left, from Portugal and Roberto Carballes from Spain enter the tennis court with four trained ball retrieving dogs, during an exhibition match of the Brazil Open tournament in Sao Paulo, Brazil, Thursday, Feb. 25, 2016. The four trained shelter dogs that once roamed the streets of Sao Paulo found themselves center stage at the ATP 250 Brazil Open tournament. The unusual initiative was made to promote the adoption of abandoned street animals.(AP Photo/Leandro Martins)