MACINTOSH, Cameron Why Animals Hibernate - 24 hlm. ilus. 21 cm Winter is very cold in many places and animals cannot always find food. Many insects, frogs, lizards and Mammals hibernate in winter. They find a warm place that is safe, and stay very still orgo into a deep sleep for a long time ISBN: 978-017032883 Subjects--Topical Terms: 0 Index Terms--Genre/Form: Grade 1-6 Dewey Class. No.: 420.01