Mister Dog, written by Margaret Wise Brown, was first published by Little Golden Books in 1952. This was the last book published in Wise Brown’s lifetime before she died age 42.
Garth Brown illustrated the text in his distinctive Garth Brown style.
The story is about a dog with the stand-out gag that he ‘belongs to himself’. This is reflected in his vaguely recursive (but ultimately nonsensical) name: Crispin’s Crispian*. I believe this was the name of Wise Brown’s own dog, and that the dog ran the show. It makes sense that the author thought of her dog as an individual with his own mind. By all accounts, the author herself refused to be constrained.