L. T.'s Theory of Pets is a horror short story by American writer Stephen King.

In 2001, it was released as an audiobook with the recording of King reading the story live at Royal Festival Hall in London.

Despite the fact that the dog and the cat get along fine, L. T. and his wife continually argue.

The narrator reveals that she has taken the dog with her, and her car was discovered abandoned on a deserted roadside in Nevada.

King himself briefly discusses how he received a Pembroke Welsh Corgi as a present, and has enjoyed its company ever since.