Roo

Roo is an informal diminutive used in many English-speaking cultures, often a pet form of names ending in -roo or simply an affectionate standalone name. It gained widespread familiarity through A.A. Milne's Winnie-the-Pooh stories, where Roo is the small, endlessly enthusiastic baby kangaroo who approaches the world with complete openness and boundless energy. The name captures something essentially young and joyful.

Roo is a name that seems tailor-made for a small, bouncy companion who has never quite grown out of the puppy or kitten phase of life — the pet who still pounces on things, still needs to investigate everything, and still greets each morning like the best morning that has ever existed. The Winnie-the-Pooh connection gives it a warm, storybook quality that adds to its considerable charm. Roo is playful, sweet, and works perfectly for any pet who moves through the world with the kind of uninhibited joy that only animals can really manage.