The Contract Is Your Proof of Ownership
The adoption contract is the document that says this cat is yours, and it carries more than a signature. Many rescue contracts include conditions that can matter years later, such as neutering commitments, a requirement to keep microchip details current, or a clause asking for the cat to return to the rescue if you can no longer keep her. A breeder's contract may record breeding details, health testing of the parents, and what was agreed about breeding. If ownership is ever questioned — by a registry, a new vet practice, or during a dispute after a relationship breakdown — this is the paper that settles it. Keep the signed original, not just a blank copy of the rescue's standard form.
Medical Notes From Before Your Cat Was Yours
The medical notes handed over on adoption day cover the chapter of your cat's life before you, and no one can recreate them later. Vaccinations given, parasite treatment dates, any illness treated in rescue, neutering status, and known quirks recorded by staff or a previous owner all belong in your cat's permanent file. New vets use them to avoid repeating vaccines or missing a known sensitivity, and insurers reading a first claim look for exactly this early history. If the handover was verbal — a chat at the rescue with nothing written — write down what you were told that same day, date it, and keep it with the paperwork; a dated note made at the time is far better than a memory offered years afterwards.
The Humble Diet Sheet Earns Its Keep
A diet sheet looks disposable, which is why it is the document most often thrown away and most often missed. It records what your cat was eating, how much, and how often at the moment her life changed, and that baseline explains a great deal if she develops loose stools in the first weeks, refuses a new food, or gains weight steadily over her first year. Keep it at least until her diet is long settled and her adult weight is stable — and by then it takes one page in the file, so most owners simply keep it permanently. Note the date you transitioned her to a new food directly on the sheet, and the record of the changeover is complete.
Microchip and Identity Paperwork Complete the Set
Adoption day usually involves chip paperwork too: either a transfer of the existing registration into your name or a new registration confirmation. Keep the confirmation showing the number, the registry, and the date the details became yours, and check the registry record itself rather than assuming the transfer went through. Add a clear photograph of your cat taken in the first days at home, showing markings distinctly. Together, contract, chip confirmation, and photo form an identity set that supports everything from a registry update to a lost-cat appeal.
For Life Means One Safe Place, With a Copy
There is no tidy retention period for adoption papers, because their uses — proof of ownership, early history, identity — can arise at any age, so keep them for your cat's whole life. Store the originals in one folder, photograph the full set, and keep the copies somewhere you can search by your cat's name. If your cat ever moves to a new owner, passing this complete file on is part of handing over responsibly. KinsLe's Transferrable Profiles transfer a cat's profile to a new owner with history, records and routines intact, continuing the same chain of care that your adoption-day folder begins.