I am looking for a humorous picture book that was published at least 35 years ago. I do not know the title or the author.

It is told from the point of view of the pets. The owners, whose legs are all you see in the illustrations, are looking for a guard dog to protect them from robberies. They get new dogs but the old pets in the house persuade each new dog that everyone who comes to the house is a friend.e.g. the milkman, the postman. Eventually a robber comes to call. The pets play with him. He doesn’t rob the house so everyone is satisfied.  Would love to find this book for my son who remembers it with great fondness from his childhood.