Stephanie Calmenson

"The girls are dismayed when their teacher is out sick and they have a substitute. Mr. Z makes goofy jokes and can't keep the class under control. Worst of all, he doesn't say anything when mean Darlene makes fun of Kate and Lucie. Luckily, once the girls turn into dogs, Kate and Lucie learn they can save the day--and even make a new friend"--

A little puppy wants to be perfect so that his owner will always love him, and even though he makes mistakes, he learns that he is loved anyway.

Harry the dog explains how to safely meet him and his friends.

Even Mr. Bungles the teacher sometimes has a day when, no matter how hard he tries, everything seems to go wrong--including allowing the class hamster, Nibbles, to escape.