National Geographic Kids Readers: Woof!

Children are naturally curious about the world around them, and

curiosity is a powerful motivation for reading. Studies show that

informational reading is critical to success in school. National

Geographic Kids Readers allow you to feed your children’s interests

and create readers who not only can read, but also want to read!

To sustain children’s excitement about reading, we have created a

special program called NATIONAL GEOGRAPHIC KIDS SUPER READERS.

As kids read each National Geographic Kids Reader, they cross

off its picture on a free National Geographic Kids Super Readers

poster that parents can download from kids.nationalgeographic.com/ superreaders.

Throughout the process, kids and parents go to the website and

download specially designated prizes that reward their effort. Kids

can have even more reading fun online, with lively book-related

activities, quizzes and games, fascinating excerpts, and sneak

previews of upcoming books.

The National Geographic Kids Super Readers program appeals to

kids’ love of accomplishment while providing them with incentives

to keep reading. When the reading experience is fun, children learn

more and achieve more. What could be better than that?

Sincerely,

Mariam Jean Dreher

Professor of Reading Education

University of Maryland, College Park

In memory of Kerry and her unwavering love, loyalty, and comfort. Thank you for being the best dog a girl could have. —E.C.

Copyright © 2017 National Geographic Partners, LLC

Published by National Geographic Partners, LLC,

Washington, D.C. 20036. All rights reserved. Repro-

duction in whole or in part without written permis-

sion of the publisher is prohibited.

NATIONAL GEOGRAPHIC and Yellow Border Design

are trademarks of the National Geographic Society,

used under license.

Designed by Amanda Larsen

Library of Congress Cataloging-in-Publication Data

Names: Carney, Elizabeth, 1981- author. | National

Geographic Society (U.S.)

Title: Woof! : 100 fun facts about dogs / Elizabeth

Carney.

Other titles: 100 fun facts about dogs | One hundred

fun facts about dogs | National Geographic kids.

Description: Washington, DC : National Geographic,

[2017] | Series: National geographic kids. Fact

readers | Audience: Ages 6-9. | Audience: K to

grade 3.

Identifiers: LCCN 2016051363 (print) | LCCN

2017017797 (ebook) | ISBN 9781426329098 (e-book)

| ISBN 9781426329074 (pbk. : alk. paper) | ISBN

9781426329081 (hardcover : alk. paper)

Subjects: LCSH: Dogs–Miscellanea–Juvenile litera-

ture. | Children’s questions and answers.

Classification: LCC SF426.5(ebook) | LCC SF426.5

.C3745 2017 (print) | DDC 636.7002–dc23

LC record available at https://lccn.loc .gov/2016051363

Photo Credits

GI = Getty Images, SS = Shutterstock

Cover, Gary Randall/Kimball Stock; 1, Purple Collar

Pet Photography/GI; 2, Elizabeth Carney; 3, Napat/

SS; 4 (UP), Sashkin/SS; 4 (CTR & LO), Eric Isselée/

SS; 5 (UP), Chirtsova Natalia/SS; 5 (CTR LE),

Matthew Mazzotta; 5 (CTR RT), Ermolaev Alexander/

SS; 5 (LO), kali9/GI; 6–7, Alan Jeffery/SS; 8, Holly

Kuchera/SS; 9, John Knight/GI; 10, Stefan Cioata/

GI; 11 (UP), Photology1971/SS; 11 (LO), Erik Lam/SS;

12, ESB Professional/SS; 13, Sharon Morris/SS; 14,

Eric Isselée/SS; 15 (UP RT), alexei_tm/SS; 15 (UP

LE), Alzbeta/SS; 15 (LO LE), BoulderPhoto/SS; 15 (LO

RT), igorr1/GI; 16, Amanda Nicholls/SS; 17, Susan

Schmitz/SS; 18, jasam_io/GI; 19, andresr/GI; 20,

LorenzoPatoia/GI; 21, Westend61/GI; 22, Alessandra

Sarti/imageBROKER/Alamy Stock Photo; 23 (UP

LE), 4kodiak/GI; 23 (UP RT), Jaromir Chalabala/SS;

23 (LO), Tim UR/SS; 24–25, Marcel Jancovic/SS; 26,

VitCOM Photo/SS; 27 (UP), Elizabethsalleebauer/

GI; 27 (LO), Eric Isselée/SS; 28–29, Spaces Images/

GI; 29, Gary Randall/KimballStock; 30, saraidasilva/

GI; 31, MisLis/GI; 32–33, Zave Smith/GI; 32 (INSET),

Javier Brosch/SS; 34, PM Images/GI; 35, Sebastien

Micke/Paris Match via GI; 36 (LE), s5iztok/GI; 36 (RT),

Kuttig-People/Alamy Stock Photo; 37, Daniel Grill/

GI; 38, Justin Tallis/AFP/GI; 39 (UP), Anton Luhr/

imageBROKER/Alamy Stock Photo; 39 (CTR), Pete

Oxford/Minden Pictures; 39 (LO), goodluz/SS; 40,

Brian Edwards; 41, Jerome Delay/AP Photo; 42,

wundervisuals/GI; 43, Humane Society of Missouri;

44 (UP), GI; 44 (CTR LE), REN JF/FEATURECHINA/

Newscom; 44 (CTR RT), Eric Isselée/SS; 44 (LO),

japape/SS; 45 (UP), Steve Mann/SS; 45 (CTR), dien/

SS; 45 (LO), Ermolaev Alexander/SS

National Geographic supports K–12 educators with ELA Common Core Resources. Visit natgeoed.org/commoncore for more information.

25 Cool Facts About Dogs 4

Chapter 1: Wolf to “Woof” 6

Chapter 2: Dogs Decoded 12

Chapter 3: Dogs at Home and on the Job 26

25 More Facts About Dogs 44

Dog Facts Roundup 46

Index 48

Unlike their other canine relatives,

African wild dogs have four toes

per paw, instead of five.

Dogs mostly sweat through

glands on their paws.

The longest-lived dog

on record lived

29 years.

Dogs aren’t the only animals that bark.

Deer, monkeys, and some types of birds

also make barking noises.

A golden retriever named Augie

held five tennis balls in her mouth

at one time, setting a world record.