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Animals that Hibernate
by Phyllis J. Perry
This is a good book for ages 9-12. It explores hibernation in mammals, fish, reptiles, amphibians and insects. There are beautiful pictures and glossary words are written in boldface text.
Do Not Disturb: The Mysteries of Animal Hibernation and Sleep
by Marjory Facklam
This book for 9-12 year olds has up to date information on animal hibernation and sleep in mammals, birds and fish in both hot and cold environments. Line drawings, good index and table of contents.
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