Martha walks the dog / written and illustrated by Susan Meddaugh.

Enhanced descriptions from Syndetics:

Martha loves her daily walks. She enjoys sniffing and scratching with her pals down by the hydrant. But today something is different. A house down the street has been sold, the for sale sign replaced by a new sign - Beware of Dog! Always curious, Martha investigates and discovers that there's a new dog in town, a blustering tough-dog named Bob. He's big and mean, and even Martha reluctantly concedes that he may be a bad dog. Martha will have to keep all her canine wits about her to protecther buddies and herself from the savage bully. Fortunately, she makes the acquaintance of a long-winded Parrot, and together the talkative duo may be able to restore peace to the neighborhood. In this hilarious new escapade by Susan Meddaugh, Martha is back, busily proving that there's no substitute for the simple power of praise for taming the toughest old dogs.