Agree on One Master Record Both Homes Trust
The failure mode for a two-home dog is not lost paperwork; it is two versions. One house has the new vaccination certificate, the other still hands a kennel the expired one, and feeding notes quietly diverge. Prevent that by agreeing, explicitly, that there is one master record — a single complete file that both households treat as the truth — and that neither home keeps private additions to it. Either home may add to the master, but nothing counts as recorded until it is in the master. That one rule, kept, eliminates most two-home confusion before it starts.
Give Each House an Identical Essentials Pack
The master may live in one place, but emergencies happen in both. Put an identical essentials pack in each home: vaccination proof, a one-page care routine covering food, walks, and settling at night, known sensitivities, your regular vet and the nearest emergency clinic to that house — which may differ across town — microchip details, and both owners' phone numbers. When anything in the pack changes, replace both copies in the same week and destroy the outdated ones; an old pack left in a drawer is worse than none, because it looks authoritative. Note the replacement date on the front of each pack so either of you can spot a stale copy at a glance.
Assign Updating Like a Duty, Not a Hope
Decide in advance who files what. A workable split: whoever took the dog to the vet updates the master that day — adding the visit summary, any new instructions, and the next appointment — and messages the other home that it is done. Whoever books boarding or a groomer adds the confirmation and any requirements. Put handovers in the same rhythm: a short note at each swap recording when she arrived, how she ate and slept, anything unusual, and what the receiving home needs to know for the coming days. That running handover note, kept inside the master file, becomes an unexpectedly valuable health diary over time.
Keep Identity and Permissions Consistent Across Town
Two addresses complicate the details other people rely on. Make sure microchip registration, vet records, and any insurance or council details list both homes and both contact numbers where the system allows it, so a finder, clinic, or kennel reaching the "wrong" home still reaches an owner who can act. Agree which vet is the primary record holder if you use clinics in both neighborhoods, and have the other clinic send visit notes across after each appointment, so the clinical history does not split the way the dog's week does. Keep one recent photo in each essentials pack — the dog as she looks now, not last year's coat.
Review the System at Each Season Change
Sit down briefly a few times a year and audit the arrangement together: read the master file as a stranger would, check both essentials packs match it, and clear out superseded instructions. Discuss what has changed in her routine — a new food, a stiffening joint on stairs, a different walk route at one home — and make sure both homes are actually working to the updated version rather than the remembered one. Two-home care works when the paperwork carries the consistency the dog cannot ask for herself.
Her profile can also be opened by relatives you select in the other home, once you grant that access through KinsLe Family Sharing.