What is hibernation? Where do different animals hibernate? Which animal hibernates for more than six months? Animal hibernation follows a pattern. Most animals hibernate when it becomes too cold and it is hard to find food. They go into a deep sleep until it gets warmer. Read 'Hibernation' to find out why this pattern happens.

Hibernation 2006, Heinemann Library, Oxford

ISBN-13: 9780431114156

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Hibernation 2005, Heinemann Library, Chicago, IL

ISBN-13: 9781410913180

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Hibernation 2005, Heinemann Educational Books, Chicago, IL

ISBN-13: 9781403458957

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