Theo

Theo is a short form of Theodore or Theodora, from the Greek Theodoros, meaning "gift of God" — combining theos, "god," and doron, "gift." It has been used as a standalone name since at least the 19th century and carries the appealing combination of classical roots with a breezy, contemporary feel. Theo has the warmth of a nickname with the dignity of a full name.

Theo ranks #144 among America's most popular pet names, and it has been one of the most consistent risers in pet naming over the past decade, tracking alongside its rise in human baby names. It hits a perfect note: substantive but not stuffy, classic but not old-fashioned, short enough for daily use but full enough to feel like a real name. Theo suits companions with an easy, curious nature — the pet who takes genuine interest in everything and approaches life with good-natured intelligence.