| The Truth About Bats by Eva Moore - 2000 - 70 pages |
| The Upside-Down Sloth by Fay Robinson - 1993 - 31 pages |
| The Whale in the Water by Dana Meachen Rau, Nanci R Vargus, Ed.D. - 2006 - 23 pages |
| The Whale Scientists by Fran Hodgkins - 2007 - 63 pages |
| The whale, giant of the ocean by Valérie Tracqui, Viäl Jacana - 1995 - 27 pages |
| The Whales of Hawaii by Island Heritage Publishing, Kenneth C. Balcomb III - 1999 - 88 pages |
| The Whales' World by Jason Cooper - 1997 - 24 pages |
| The White-Tailed Deer by Michael Zwaschka - 1997 - 48 pages |
| The Wild Side of Pet Ferrets by Jo Waters - 2005 - 32 pages |
| The Wild Side of Pet Ferrets by Jo Waters - 2004 - 32 pages |
| The Wildebeests' Great Migration by Lynn M. Stone - 1991 - 48 pages |
| The Wonder of Bats by Amy Bauman, Kathryn T. Lundberg, Merlin D. Tuttle, John F. McGee - 2000 - 48 pages |
| The Wonder of Beavers by Amy Bauman, Patricia Corrigan, John F. McGee - 2000 - 48 pages |
| The wonder of bison by Rita Ritchie, Todd Wilkinson, Michael Harlowe Francis, John F. McGee - 1996 - 48 pages |
| The Wonder of Whitetails by Patricia Lantier-Sampon, Daniel J. Cox, Tom Wolpert - 1992 - 48 pages |
| The World of Bats by Virginia Harrison, Helen Riley - 1989 - 32 pages |
| The World of Marine Mammals by Adrienne Mason, Garth Buzzard - 1999 - 61 pages |
| The world of the porcupine by David Francis Costello - 1966 - 157 pages |
| The world of the prairie dog by David Francis Costello - 1970 - 160 pages |
| The world of the pronghorn by Joe Van Wormer - 1969 - 191 pages |
| The year of the badger by Molly Burkett - 1974 - 128 pages |
| The year of the kangaroo by Henry Darvall Williamson - 1977 - 187 pages |
| The Zebra by Nadine Saunier - 1989 - 20 pages |
| The zebra by Carl R. Green, William R. Sanford, Judy Lockwood - 1988 - 47 pages |
| They walk the earth by Seymour Simon, Elsa Warnick - 2001 |
| They Walk the Earth by Seymour Simon - 2000 - 40 pages |
| Think of a Beaver by Karen Wallace - 1995 - 32 pages |
| Those Amazing Bats by Cheryl Mays Halton - 1991 - 96 pages |
| Those Delightful Dolphins by Jan Lee Wicker, Steve Weaver - 2007 - 55 pages |
| Those Delightful Dolphins by Jan Lee Wicker, Steve Weaver - 2007 - 55 pages |
| Those Magical Manatees by Jan Lee Wicker, Steve Weaver - 2008 - 55 pages |
| Those Magical Manatees by Jan Lee Wicker - 2007 - 55 pages |
| Those Magical Manatees by Jan Lee Wicker - 2007 - 55 pages |
| Three-Toed Sloths by Willow Clark - 2012 - 24 pages |
| Three-Toed Sloths by Natalie Lunis - 2010 - 24 pages |
| Thunder Bear and Ko by Susan Hazen-Hammond - 1999 - 32 pages |
| Time For Kids: Bats! by Editors of TIME For Kids - 2005 - 32 pages |
| Time For Kids: Bats! by Nicole Iorio - 2005 - 32 pages |
| Top 10 Small Mammals for Kids by Ann Graham Gaines - 2008 - 48 pages |
| Top 50 Reasons to Care About Rhinos by Mary Firestone - 2010 - 104 pages |
| Top 50 Reasons to Care About Whales and Dolphins by Sara Cohen Christopherson - 2010 - 104 pages |
| Topical bibliography for the white-tailed deer (Odocoileus virginianus) in nine U.S. National Park Service regions and parts of Canada by Jonathan E. Hoeldtke, Susan Bratton, John Hadidian, United States. National Park Service. Natural Resources Publication Office - 1992 - 154 pages |
| Tree Kangaroos by Willow Clark - 2012 - 24 pages |
| Tree Kangaroos by Chuck Miller - 2002 - 32 pages |
| Tricky Opossums by Catherine Nichols - 2008 - 24 pages |
| Underwater pulsed sounds produced by captive spotted dolphins, Stenella plagiodon by David Keller Caldwell, Melba C. Caldwell - 1971 - 7 pages |
| Unlikely Friendships for Kids: The Dog & the Piglet by Jennifer S Holland - 2012 - 48 pages |
| Valentin, a special bat by Laura Navarro - 1998 - 47 pages |
| Vampire Bats by Tamara L. Britton - 2010 - 24 pages |
| Vampire Bats by Barbara A. Somervill - 2007 - 24 pages |
| Vampire Bats by Emily Raabe - 2005 - 24 pages |
| Vampire Bats by Julie Murray - 2004 - 24 pages |
| Vampire Bats by Emily Raabe - 2003 - 24 pages |
| Vampire Bats by Emily Raabe - 2003 - 24 pages |
| Vampire Bats by Pamela J. Gerholdt - 1996 - 24 pages |
| Vampires by Colin Hawkins, Jacqui Hawkins, Enid Von Bluoton - 1985 - 32 pages |
| Walrus by Stephen Person - 2011 - 32 pages |
| Walruses by Louise Spilsbury - 2013 - 48 pages |
| Walruses by Louise Spilsbury - 2013 - 48 pages |
| Walruses by Zelda King - 2011 - 24 pages |
| Walruses by Valerie J. Weber - 2008 - 24 pages |
| Walruses by Colleen A Sexton - 2007 - 24 pages |
| Walruses by Connie Colwell Miller - 2005 - 24 pages |
| Walruses by Julie Murray - 2002 - 24 pages |
| Walruses by Julie Murray - 2002 - 24 pages |
| Walruses by Frank J Staub - 1999 - 47 pages |
| Walruses of the Arctic by Sara Swan Miller - 2009 - 24 pages |
| Walruses/Morsas by Valerie J. Weber - 2008 - 24 pages |
| Warthogs by Kevin J. Holmes - 1999 - 24 pages |
| Warthogs by Kevin J. Holmes - 1999 - 24 pages |
| Warthogs by Don Rothaus - 1996 - 32 pages |
| Watchful Wolves by Ruth Berman, William Muñoz - 1999 - 32 pages |
| Watchful Wolves by Ruth Berman, William Muñoz - 1998 - 32 pages |
| Watching Bison in North America by L. Patricia Kite - 2006 - 32 pages |
| Watching Bison in North America by L. Patricia Kite - 2006 - 32 pages |
| Watching Dolphins in the Ocean by Elizabeth Miles - 2006 - 32 pages |
| Watching Dolphins in the Ocean by Elizabeth Miles - 2006 - 32 pages |
| Watching Giraffes in Africa by Deborah Underwood - 2006 - 32 pages |
| Watching Giraffes in Africa by Deborah Underwood - 2006 - 32 pages |
| Watching Kangaroos in Australia by Louise A. Spilsbury, Richard Spilsbury - 2006 - 32 pages |
| Watching Kangaroos in Australia by Louise A. Spilsbury, Richard Spilsbury - 2006 - 32 pages |
| Watching Reindeer in Europe by Elizabeth Miles - 2006 - 32 pages |
| Watching Reindeer in Europe by Elizabeth Miles - 2006 - 32 pages |
| Weddell Seal by Joyce L. Markovics - 2008 - 32 pages |
| Weird creatures of the wild by Theresa Greenaway - 1997 - 21 pages |
| Welcome to the World of Beavers by Diane Swanson - 1999 - 27 pages |
| Welcome to the World of Otters by Diane Swanson - 1997 - 27 pages |
| Welcome to the World of Whales by Diane Swanson - 1996 - 28 pages |
| Whale by Vassili Papastavrou, Frank Greenaway - 2000 - 64 pages |
| Whale by Vassili Papastavrou - 2000 - 64 pages |
| Whale by Vassili Papastavrou, Frank Greenaway - 1993 - 64 pages |
| Whale Journey by Vivian French - 1998 - 32 pages |
| Whale magic for kids by Tom Wolpert - 1991 - 48 pages |
| Whales by Johannah Haney - 2008 - 48 pages |
| Whales by Valerie J. Weber - 2008 - 24 pages |
| Whales by Lisa Rao - 2008 - 32 pages |
| Whales by Scott R. Welvaert - 2005 - 24 pages |
| Whales by Carol K. Lindeen - 2004 - 24 pages |
| Whales by Carol K. Lindeen - 2004 - 24 pages |
| Whales by Adele Richardson - 2002 - 24 pages |
| Whales by Graham Faiella - 2002 - 48 pages |
| Whales by Daniel A. Greenberg - 2002 - 110 pages |
| Whales by Martha E. H. Rustad - 2001 - 24 pages |
| Whales by Theresa Greenaway - 2001 - 48 pages |
| Whales by Garry Fleming - 2000 - 64 pages |
| Whales by Daniel A. Greenberg - 2000 - 48 pages |
| Whales by Daniel A. Greenberg - 2000 - 48 pages |
| Whales by Golden Books - 1999 - 24 pages |
| Whales by Deborah Hodge, Pat Stephens - 1997 - 32 pages |
| Whales by Joan Short, Bettina Bird - 1997 - 31 pages |
| Whales by Deborah Hodge, Pat Stephens - 1997 - 32 pages |
| Whales by Lesley A. DuTemple - 1996 - 48 pages |
| Whales by Amanda Harman - 1996 - 32 pages |
| Whales by Erik D. Stoops, Jeffrey L. Martin, Debbie Lynne Stone - 1996 - 80 pages |
| Whales by John Bonnett Wexo - 1990 - 20 pages |
| Whales by Seymour Simon - 1989 - 40 pages |
| Whales by Seymour Simon - 1989 - 40 pages |
| Whales by Seymour Simon - 1989 - 40 pages |
| Whales & Dolphins by Caroline Bingham - 2003 - 48 pages |
| Whales and Dolphins by Steve Parker - 2010 - 24 pages |
| Whales and Dolphins by Steve Parker - 2010 - 24 pages |
| Whales and Dolphins by Robin Kerrod - 2001 - 60 pages |
| Whales and Dolphins by Petra Deimer - 1998 - 48 pages |
| Whales and dolphins by David Thorpe, V.G. Cockcroft, Eva Plaganyi - 1994 - 32 pages |
| Whales and Dolphins Coloring Book by John Green - 1990 - 48 pages |
| Whales and Other Marine Mammals by George S. Fichter - 1990 - 160 pages |
| Whales and other sea mammals by Elsa Z. Posell - 1982 - 45 pages |
| Whales and People by Jason Cooper - 1996 - 24 pages |
| Whales Can Sing by Kate Petty, Darren Harvey, Jo Moore - 1998 - 32 pages |
| Whales of the Seas by Jason Cooper - 1996 - 24 pages |
| Whales of the Seas by Jason Cooper - 1996 - 24 pages |
| Whales of the World by June Behrens - 1987 - 44 pages |
| Whales! by Irene Trimble, Greg Harris - 1999 - 24 pages |
| Whales, dolphins, and more marine mammals by Sarah Gustafson - 2005 - 48 pages |
| Whales, dolphins, and porpoises by Mark Carwardine - 1992 - 64 pages |
| Whales: The Gentle Giants by Joyce Milton - 1989 - 48 pages |
| Whales: The Gentle Giants by Joyce Milton - 1989 - 48 pages |
| What a Whale by Ilse Battistoni - 2002 - 24 pages |
| What Do You Call a Group of Hippos? by Emma Nathan - 2000 - 24 pages |
| What Has Horns? by Mary Elizabeth Salzmann - 2007 - 24 pages |
| What If There Were No Lemmings? by Suzanne Slade, Carol Schwartz - 2010 - 24 pages |
| What If There Were No Lemmings? by Suzanne Slade - 2010 - 24 pages |
| What If There Were No Sea Otters? by Suzanne Slade, Carol Schwartz - 2010 - 24 pages |
| What If There Were No Sea Otters? by Suzanne Slade - 2010 - 24 pages |
| What Is a Mammal? by Lola M. Schaefer - 2005 - 24 pages |
| What Is a Mammal? by Janet Carson - 2001 - 12 pages |
| What Is a Mammal? by Lola M. Schaefer, Gail Saunders-Smith, PH.D. - 2001 - 24 pages |
| What Is a Mammal? by Golden Books - 1986 - 48 pages |
| What is a mammal? by Jenifer W. Day - 1975 - 31 pages |
| What Is a Marine Mammal? by Bobbie Kalman, Jacqueline Langille - 1999 - 32 pages |
| What Is a Marine Mammal? by Bobbie Kalman, Jacqueline Langille - 1999 - 32 pages |
| What is a marsupial? by Bobbie Kalman, Heather Levigne - 2000 - 32 pages |
| What Is a Marsupial? by Bobbie Kalman, Heather Levigne - 2000 - 32 pages |
| What is a whale? by Bobbie Kalman, Heather Levigne - 2000 - 32 pages |
| What Is a Whale? by Bobbie Kalman, Heather Levigne - 1999 - 32 pages |
| What on earth is a guanaco? by Edward R. Ricciuti - 1994 - 32 pages |
| What on earth is a hyrax? by Edward R. Ricciuti - 1997 - 32 pages |
| What on Earth Is a Meerkat? by Jenny E. Tesar - 1994 - 32 pages |
| What on earth is a quokka? by Jenny E. Tesar - 1997 - 32 pages |
| What on earth is an echidna? by Jenny E. Tesar - 1995 - 32 pages |
| What to Expect When You're Expecting Joeys by Bridget Heos, Stéphane Jorisch - 2011 - 32 pages |
| What's a lemming? by Dorothy M. Souza - 1998 - 40 pages |
| When Winter Comes by Pearl Neuman, Richard Roe - 1989 - 30 pages |
| White-Sided Dolphins by Megan M. Gunderson - 2010 - 24 pages |
| White-Sided Dolphins by John F. Prevost - 1996 - 24 pages |
| White-Sided Dolphins by John F. Prevost - 1996 - 24 pages |
| White-Sided Dolphins by John F. Prevost - 1996 - 24 pages |
| Whitetail Deer by Laura Evert, John F. McGee - 2000 - 48 pages |
| Whitetails by Tom Wolpert - 1991 - 48 pages |
| Who can trust you, kangaroo? by Richard Hefter, Ruth Lerner Perle - 1978 - 32 pages |
| Who's this? by Dot Finney, Margaret Philson, Babs Wells, Bert Wells - 1991 - 30 pages |
| Why Am I a Mammal? by Greg Pyers - 2005 - 32 pages |
| Why Am I a Mammal? by Greg Pyers - 2005 - 32 pages |
| Wild and Woolly Mammoths by Aliki - 1998 - 32 pages |
| Wild Animals by Moira Butterfield - 2003 - 24 pages |
| Wild animals by Barbara A. McKean - 1986 - 31 pages |
| Wild orphan by Glen Rounds - 1961 - 84 pages |
| Wildebeest by Louise A Spilsbury - 2012 - 24 pages |
| Wildebeest by Louise Spilsbury - 2011 - 24 pages |
| Wildebeest by Louise Spilsbury - 2011 - 24 pages |
| Wildebeest by Louise Spilsbury - 2011 - 24 pages |
| Wildebeest by Blackbirch, Melissa S. Cole - 2002 - 24 pages |
| Wildebeests by Mary Molly Shea - 2010 - 24 pages |
| Wildebeests by Mary Molly Shea - 2010 - 24 pages |
| Wildebeests by Mary Molly Shea - 2010 - 24 pages |
| Wildebeests by Katherine Walden - 2009 - 24 pages |
| Wildebeests by Sharon Sharth - 2001 - 32 pages |
| Winter's Tail by Juliana Hatkoff, Isabella Hatkoff, Craig Hatkoff - 2011 - 40 pages |
| Wolf by Jalma Barrett - 2000 - 24 pages |
| Wolverine by Joyce Markovics - 2011 - 32 pages |
| Wolverines by Sandra Markle - 2005 - 39 pages |
| Wolves by June Preszler - 2006 - 24 pages |
| Wolves by Kate Hayden - 1999 - 24 pages |
| Wombats by Julie Murray - 2011 - 32 pages |
| Wombats by Lynn George - 2010 - 24 pages |
| Wombats by Lynn George - 2010 - 24 pages |
| Wombats by Kristin Petrie - 2010 - 24 pages |
| Wombats by Sara Louise Kras - 2009 - 24 pages |
| Wombats by Sara L. Kras - 2009 - 24 pages |
| Wombats by Lynn M. Stone - 1990 - 24 pages |