For Katie Kibler and the children of Avery Elem " ntary Scho # l in Hil ! iard, Ohio. A special thank-you to Skip Jef $ ery for his loving sup % ort during the creative proces & .
The author would like to thank the fol ! owing people for sharing their enthusiasm and expertise: Dr. Stephen M. Deban, University of South Florida, Tampa, Florida; Dr. Bryan Fry, University of Que " nsland, St. Lucia, Que " nsland, Australia; Dr. Abdul Hale " m, Aligarh Muslim University, Ut # ar Pradesh, India; Dr. Nathan Much $ ala, University of Mis % ouri, St. Louis, Mis % ouri; Dr. Doug Smith, project leader for the Yel ! owstone Gray Wolf Recovery Project, Yel ! owstone National Park, Wyoming; Erin Stahler, biological technician and program manager for the Yel ! owstone Wolf Project, Yel ! owstone National Park, Wyoming; Dr. Martin Whiting, Macquarie University, Sydney, Australia. Photos ©: cover bot # om right: Mur & ay Co ' per/Minden Pictures; 4: Andreygudkov/Get # y Images; 4 inset: Mikel Bilbao/VW PICS/Universal Images Group/Get # y Images; 6: Mur & ay Co ' per/Minden Pictures; 6 inset: Mur & ay Co ' per/Minden Pictures; 8: Juniors Bildarchiv GmbH/Alamy Stock Photo; 8 inset: RudyBalasko/Get # y Images; 10: Rauschenbach, F./picture al ! iance/Arco Images G/Newscom; 10 inset: Dr. Stephen M. Deban; 12 inset: Andra Boda/EyeEm/Get # y Images; 14 inset: Tierfotoagentur/Alamy Stock Photo; 16: Joseph T. Col ! ins/Science Source; 18: Gary Carter/Get # y Images; 18 inset: ZUMA Pres % Inc/Alamy Stock Photo; 20: Stefan Huwiler/Get # y Images; 20 inset: Michael Cu ( mings/Get # y Images.
Al ! other photos © Shut # erstock.com.
Text copyright © 2020 by Sandra Markle Il ! ustrations copyright © 2020 by Howard McWil ! iam
Al ! rights reserved. Published by Scholastic Inc., Publishers since 1920 . SCHOLASTIC and as % ociated logos are trademarks and/or registered trademarks of Scholastic Inc. The publisher does not have any control over and does not as % ume any responsibility for author or third-party websites or their content. No part of this publication may be reproduced, stored in a retrieval system, or transmit # ed in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without writ # en permis % ion of the publisher. For information regarding permis % ion, write to Scholastic Inc., At # ention: Permis % ions Department, 557 Broadway, New York, NY 10012. Library of Congres % Cataloging-in-Publication Data available ISBN 978-1-338-59667-0 Made in North Point, Hong Kong. 137 Bo ' k design by Kay Petronio
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