Start With the Neighbours, Not the Horizon
A missing Cavalier is rarely a wilderness problem; she is a companion dog who left in search of company and will accept the first kind invitation she meets. Spend the first minutes checking your own home properly — a small spaniel can be asleep under a duvet or behind a curtain — then go door to door on your street in person, asking each neighbour to check porches, conservatories, open garages and their own living rooms. The in-person ask matters: the person who has taken her in may not see an online post for hours, but will happily check the armchair she has colonised when you knock.
Leave her bedding and a family member at home in case she trots back while you are three doors down.
Walk Her Small, Familiar World
If the street draws a blank, walk — slowly, on foot — the routes she actually knows: her short daily walk, the school gate, the café with outdoor tables, relatives' houses nearby. Call her name in your normal voice at intervals and listen; a Cavalier shut in a shed or garage answers with a whine or a scratch rather than a bark. Check garden chairs, summer houses and caravans, the furniture of a dog who prefers upholstery to adventure.
Resist widening the search dramatically in the first hour. Her legs, her temperament and her intentions all keep her close, and a thoroughly checked small circle beats a thinly driven large one.
Make Her Missing Official in Parallel
Have a second person work the phone while you walk: microchip registry first, to report her missing and verify that the number registered is the one you are carrying; then veterinary practices, shelters, rescue centres and the dog warden with a description that leads with her colour — Blenheim, tricolour, ruby or black and tan — her size, and her microchip status. Post her photograph, location and your number to local groups, wording it for finders: she is friendly, she may already be indoors with someone, please check and share.
Tell her groomer and sitter as well. People who know a Cavalier by sight are the most likely to spot her in someone else's arms and realise she does not belong there.
Handle Sighting Calls With Care
Because she is portable and appealing, verify any found-Cavalier call against the details only you know — her exact patch pattern, a spot on her head, a scar — before rushing across town, and take proof of ownership with you when you collect her. If a finder seems reluctant, stay warm and grateful rather than accusatory; most delays are muddle, not malice, and your paperwork and chip record settle ownership calmly.
Note every call's time and place anyway. Even mistaken sightings map where similar dogs live, which sharpens the second hour if she is still missing.
An Hour Built Around Laps and Doorsteps
Close the hour with the street knocked, her routes walked, her chip flagged, professionals informed and her photograph circulating among the people most likely to be hosting her. For a Cavalier, that is not a preliminary — it is the search itself, and it very often ends with a neighbour opening a door and a small spaniel looking up from the best chair.
KinsLe's Lost Pet Alert System pushes her picture and your number to nearby Circle of Love members during that same hour, so even the neighbours you could not reach in person know to check the porch.