Cetaceans have complex brains for complex cognition. oleh Lori Marino, Richard C Connor, R Ewan Fordyce, Louis M Herman, Patrick R Hof, Louis Lefebvre, David Lusseau, Brenda McCowan, Esther A Nimchinsky, Adam A Pack, Luke Rendell, Joy S Reidenberg, Diana Reiss, Mark D Uhen, Estel Van der Gucht, Hal Whitehead