Jupiter

Jupiter is the Roman king of the gods, whose name derives from Proto-Italic Iovis pater meaning 'father Jove,' related to Latin dies (day) and an Indo-European root for sky or bright. Jupiter is also the largest planet in the solar system, a gas giant more than twice the mass of all other planets combined.

Jupiter is a name scaled to ambition. It belongs to the largest planet in our solar system and to the king of the Roman gods — both of which suggest a pet whose personality fills every room they enter. It works beautifully for genuinely large dogs, where the astronomical scale of the reference makes literal sense, but there is also tremendous humor in naming a small cat or a miniature dachshund Jupiter. The name is gaining traction as a human given name, which signals that it has crossed from purely celestial territory into something genuinely wearable and current.