Spencer's New Pet

The blurb inside the front cover for this wordless picture book is perfect:

“This is the classic tale of a boy and a dog. One of them just happens to be a balloon.”

It's a little black-and-white silent movie of a book, with the boy and dog spending time together at home, romping in the park, visiting a birthday party, always with the dangers—the spikes of a hedgehog, the teeth of a bulldog, the pin of Pin-the-Tail-on-the-Donkey—horrifying to a balloon.

Delightful.