Ollie

Ollie is a diminutive of Oliver, from Old French Olivier, itself from Latin olivarius meaning "olive tree planter." It strips the more formal Oliver down to its most affectionate, informal self — the version of the name your closest friends use. Ollie carries that same warmth and gentleness as its parent name, but with an added bounce that makes it feel immediately approachable.

Ollie holds the #51 spot among US pet names, with nearly 1,600 companions carrying it. The name has a particular charm for companions who are enthusiastic in their affections — animals who have not yet discovered the concept of dignity and are completely fine with that. Ollie tends to suit playful, bright-eyed companions who bring a relentless good humor to everything they do. It is a name that invites interaction, and the companion named Ollie usually delivers on that promise.