Pig the pug’s selfishness and greed remain unchecked in his third book, in which he’s anticipating Christmas with an almost maniacal fervor: “He’d written a list,/ and he’d asked for a lot./ But Santa ...

Pug is master of the house—indeed, his human owners are never seen. Then a new pet, Pig, shows up, wearing a blue dress with a ruffle, no less. Pig immediately and cheerfully co-opts everything that ...