Renowned for his easy readers in the 1970s and '80s, Arnold Lobel had a number of prior releases, including 1969's Small Pig. A farmer and his wife treat the pig they keep on their farm almost like a son, but one day after cleaning the farmhouse, the Mrs. notices the rest of the farm is a mess, and decides to sanitize all of it. The worst area is the pigpen, where the little pig loves sinking deep in the cool mud. After the farmer's wife cleans every last mud spatter, the pig has nowhere to wallow. He runs away from the farm, planning never to return.
Where can a domestic pig find quality mud? The swamp is crowded with animals who don't want an outsider encroaching. The garbage dump has no mud to speak of. How about the big city? Surely no place is dirtier. Hunting the busy streets for mud, the pig spots a nice soft patch...but is it actual mud, or something likely to get him in trouble? Pigs don't belong in the city, but our porcine hero may never find a home unless people who care intervene. Will he ever be happy again?
Small Pig is an intriguing concept. The farmer's wife means well by cleaning the property, aiming to better the place for animals and people alike, but improvement projects aren't appreciated by everyone. Some have no desire for a clean life at the moment; they want to wallow in the mud that feels so good. You might consider their mess distasteful, but pressuring someone you care about into conforming to your improvement schedule may cause them to leave. Not everyone is on the same page at the same time, and you have to leave room for others to follow their own timetable.
I rate Small Pig two and a half stars, but I'm persuaded to round that upward; the art style and writing aren't as evolved as Arnold Lobel's later work, but it's a deeper book than I perceived at first blush.