 Schmelz, Duguid, Bohn, and Völter suggested that an understanding of cooperation may not be required for successful cooperation in the wild.Cooperative hunting may be possible through situational coordination and mutualism, without any complex social cognitive abilities.Two groups of researchers (first Kuczaj, Winship, and Eskelinen, and then Eskelinen, Winship, and Jones) adapted the cooperative pulling paradigm for captive bottlenose dolphins ("Tursiops truncatus").