Wounded Wolf (picture book illustrated by John Schoenherr) 1978 The American Walk Book 1979 River Rats, Inc. 1980 The Cry of the Crow () 1982 Journey Inward (autobiography) 1982 The Grizzly Bear With the Golden Ears (picture book illustrated by Tom Catania) () 1982 The Wild, Wild Cookbook (illustrated by Walter Kessell) 1983 One Day in the Desert (One Day series #1) 1983 The Talking Earth 1984 One Day in the Alpine Tundra (One Day series #2) 1985 How to Talk to Your Animals 1986 One Day in the Prairie (One Day series #3) 1986 How to Talk to Your Cat (chapter book, originally included in 1985's How to Talk to Your Animals, illustrated by George) 1986 How to Talk to Your Dog (chapter book, originally included in 1985's How to Talk to Your Animals, illustrated by George) 1987 Water Sky (illustrated by George) 1988 One Day in the Woods (One Day series #4) 1989 Shark Beneath the Reef 1990 One Day in the Tropical Rainforest (One Day series #5) 1990 On the Far Side of the Mountain (Mountain series #2, illustrated by George) () 1990 The Big Book for Peace (illustrated by Ted Rand) 1991 The Moon of the Mountain Lions (The Thirteen Moons #8, new edition of picture book illustrated by Ron Parker) 1991 The Moon of the Alligators (The Thirteen Moons #10, new edition of picture book illustrated by Michael Rothman) 1991 The Moon of the Gray Wolves (The Thirteen Moons #11, new edition of picture book illustrated by Sal Catalano) 1992 The Missing 'Gator of Gumbo Limbo (Ecological Mystery #2) 1992 The Moon of the Salamanders (The Thirteen Moons #3, new edition of picture book illustrated by Marlene Hill Werner) 1992 The Moon of the Chickarees (The Thirteen Moons #4, new edition of picture book illustrated by Don Rodell) 1992 The Moon of the Fox Pups (The Thirteen Moons #6, new edition of picture book illustrated by Norman Adams) 1992 The Moon of the Wild Pigs (The Thirteen Moons #7, new edition of picture book illustrated by Paul Mirocha) 1992 The Moon of the Deer (The Thirteen Moons #9, new edition of picture book illustrated by Sal Catalano) 1992 The Moon of the Winter Bird (The Thirteen Moons #12, new edition of picture book illustrated by Vincent Nasta) 1992 The Moon of the Moles (The Thirteen Moons #13, new edition of picture book illustrated by Michael