Shadow

Shadow comes from Old English sceadu, meaning the darkness cast by a body blocking a light source. As a concept, a shadow is inseparable from its source — it follows wherever you go, faithfully present even when you cannot see it. As a pet name, this becomes deeply poetic: a companion who is your shadow, always near, always present, defined by their attachment to you.

Shadow holds the #50 spot among US pet names, with nearly 1,600 companions sharing it. The name is particularly popular for dark-coated animals — black cats, charcoal-grey companions, animals whose coloring makes the shadow imagery immediately vivid. But beyond color, Shadow captures something true about the human-animal bond: the companion who follows you from room to room, who appears at your side without being called, who is simply always there. That kind of devotion deserves a name that honors it.