THE WICKED STEPDOG ......................................... 1982
NOBODY'S BABY NOW ......................................... 1983
RACHEL ALEXANDER & DASH MYSTERIES
THIS DOG FOR HIRE ....................................... 1996
THE DOG WHO KNEW TOO MUCH ............................... 1997
A HELL OF A DOG ......................................... 1998
LADY VANISHES ........................................... 1999
THE WRONG DOG ........................................... 2000
THE LONG GOOD BOY ....................................... 2001
FALL GUY ............................................. 2004
WITHOUT A WORD ........................................ 2005
THE HARD WAY ........................................ 2006
NONFICTION
DOG TRAINING FOR KIDS ................................ 1979
CARTOONING FOR KIDS ................................. 1982
DOG TRICKS (with Arthur J. Haggerty) ..................................... 1982
WRITING FOR KIDS .................................... 1985
MOTHER KNOWS BEST: THE NATURAL WAY TO TRAIN YOUR DOG ....................... 2002
DOG SMARTS: THE ART OF TRAINING YOUR DOG ...................................... 2007