Only in a picture book can an animal who is always thought of as grunting lazily and wallowing in mud and garbage be transformed into a lover of hooked rugs and frilly cribs -- a parlor pig. Percy, who wears a neat bow around his neck and a bib when he eats, who learns to balance a ball on his snout, but who grows very large and is forced to move from suburbia, will find many ready friends among young onlookers. The problem of Percy's dwelling place is easily solved when Mary Jane's parents tow their house from the town to the country -- and Percy is permitted to remain in the parlor. The author's illustrations -- especially of pigs -- have the quality of simplicity which is easily appreciated. Not quite up to the author's last, Miss Lollipop's Lion (1963, p. 104, J-38), but still a satisfying spoof.