Sam Spayed
1. The Fido Frame-up (1983)
2. A Nose for Trouble (1985)
3. Where There's a Will, There's a Wag (1986)

Sam and Dave Mystery
1. Leroy Is Missing (1984)
2. The Case of the Sabotaged School Play (1984)
3. A Clue in Code (1985)
4. The Case of the Cackling Car (1985)
5. The Case of the Fixed Election (1989)
6. The Hoax On You (1989)

Turtle in July (poems) (1989)
In My Tent (poems) (1992)
It's Hard to Read a Map with a Beagle On Your Lap (poems) (1993)
The Morgans' Dream (poems) (1993)
Family Reunion (poems) (1994)
Sky Words (poems) (1994)
Please Don't Squeeze Your Boa, Noah! (poems) (1995)
All We Needed to Say (poems) (1996)
Monster Museum (poems) (2001)
Footprints On the Roof (poems) (2002)
The Company of Crows (poems) (2002)
Fireflies At Midnight (poems) (2003)
How to Cross a Pond (poems) (2003)
Creature Carnival (poems) (2004)
Make Me Over: Eleven Original Stories about Transforming Ourselves (2005)
Central Heating: Poems about Fire and Warmth (poems) (2005)
Sports Shorts: Exceptional Sports Titles for Intermediate Grades (2005) (with Joseph Bruchac)
First Food Fight This Fall and Other School Poems (poems) (2008)
A Full Moon Is Rising (poems) (2011)
Twosomes: Love Poems from the Animal Kingdom (poems) (2011)
A Stick Is an Excellent Thing (poems) (2012)
Every Day's a Dog Day (poems) (2012)

Stay True: Short Stories for Strong Girls (1998)
I Believe in Water: Twelve Brushes with Religion (2000) (with Joyce Carol Thomas)
Face Relations: Eleven Stories About Seeing Beyond Color (2004)