Collins, Sophie. Why does my dog do that? : comprehensive answers to the 50+ questions that every dog owner asks / [Sophie Collins]. - Singapore : Page One, 2008. - 128 p. : ill. ; 20 cm. First published: East Sussex : Ivy Press, 2008. ISBN: 9812751076 (hbk.) 9789812751072 (hbk.) Subjects--Topical Terms: Dogs--Behavior.Dogs--Psychology. Dewey Class. No.: 636.7 / COL 2008