First, Confirm the Giant Is Really Out
A Flemish Giant is hard to hide, but check before you raise the alarm: look inside his house and tunnels, under hay racks, behind his pen furniture, and in any indoor corner where a large rabbit can flatten himself surprisingly low. Check the pen gate latch and fence line for the gap, pushed panel, or dug corner he used, and close it if other animals remain inside. Note the time you last definitely saw him and exactly where, because every later decision in this hour depends on that starting point.
If children or dogs are helping, settle them first. A loose giant plus excited searching is how rabbits get chased into roads.
Search the Hiding Geography Around His Pen
Work outward slowly from where he escaped, checking the places a large prey animal chooses: under decks and steps, inside open sheds and garages, behind stacked materials, under dense shrubs, and along fence lines where he can press into shadow. A giant cannot use the tiny gaps smaller rabbits exploit, which narrows the search helpfully. If a space is too narrow for his shoulders, move on.
Take a torch even in daylight for under-building spaces, and a container of his usual food to rustle softly. Call quietly and pause to listen for movement rather than shouting his name across gardens, which can push a nervous rabbit to bolt and hide harder.
Brief Neighbours to Spot, Not Chase
Knock on nearby doors within this first hour and show his scale photograph, so people understand they are looking for a rabbit the size of a small dog, not an ordinary bunny. Ask them to check under their own decks, sheds, and parked vehicles, and to phone you with a sighting rather than grabbing at him. A Flemish Giant is strong, can injure his back if lifted badly, and may kick free from a stranger, turning a sighting into a worse escape.
Give every neighbour the same simple instruction: keep eyes on him from a distance, note the direction if he moves, and let you or an experienced handler do the catching with food, a carrier, and calm enclosure by panels if needed.
Alert Vets, Rescues, and Local Networks Now
Phone local veterinary practices and rabbit rescues while the search continues, ideally with a second person making calls as you search. Send the scale photograph and a side view, his colour, where and when he was last seen, and your phone number. Ask them to log him in case a giant is brought in injured or contained by someone who does not use social media.
Post the same details to local community and lost-pet groups, leading with his size so the post is not scrolled past as a generic rabbit notice. Keep one person monitoring replies so a genuine sighting is acted on within minutes rather than buried under sympathetic comments.
Set the Trap of Familiar Things and Keep Watching
Place his open carrier or a secure pen near the escape point with hay and a favourite food inside, and position any home camera to watch it. Giants who have not gone far often return toward familiar shelter and food as the area quietens, especially toward evening. If you spot him, do not lunge: sit or kneel nearby, let him approach food, and guide him into the carrier or a panelled corner with helpers acting as a slow, quiet wall.
Sending the alert through KinsLe at the start of this hour means the Lost Pet Alert System reaches nearby members while you search, multiplying the eyes checking under decks for your giant.