zoopsychology (?z???sa??k?l?d??) n1. (Zoology) the psychology of animals2. (Psychology) the psychology of animalsCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014zoopsychologya branch of psychology that studies animal behavior.See also: Animals-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.