When a pet changes hands, the vet records do not follow
A pet's history belongs to the practice and to whoever was the client. A new owner starts empty unless somebody asks first, in writing, before the handover.
The adoption goes through, the carrier goes in the car, and a week later the new vet asks a question nobody can answer: when was she last vaccinated? The animal is right there. The history is not.
A pet’s medical record does not belong to the pet, and it does not travel with them. It belongs to the practice that wrote it, and access to it runs through whoever was that practice’s client. So when an animal changes hands, by rehoming, adoption, a permanent move between households, or a sale, the new owner starts empty by default. The fix is to ask before the handover, in writing, while everybody is still talking.
Who owns the record?
The practice. The AVMA’s principles of veterinary data ownership and stewardship open with it: veterinary practices own their practice data. That is not a technicality invented to be unhelpful, and the same list carries its own counterweight a few lines down, where it says practice data should be portable and accessible.
Both halves matter. You cannot walk out with the file, because it is not yours. You can get a copy, because the profession’s own stated principle is that the data should move. The split is drawn differently by place: in Ontario the regulator keeps the original with the clinic and says the information belongs to the client, which switching vets walks through.
Why the new owner cannot simply ask
This is the part that surprises people, and it is worth being precise about, because it is a rule about relationships rather than about animals.
The AVMA publishes a Model Veterinary Practice Act as guiding principles for states writing or revising their own veterinary practice acts. Its confidentiality section would stop a veterinarian disclosing client or patient information except on witnessed verbal, written or electronic authorization by that veterinarian’s client, or under a court order. It is a model rather than law, and what your state or province actually adopted may differ, so the practice itself is the place to check.
In a change of owner, the client is the person who brought the animal in. The new owner is a stranger to that practice, asking for somebody else’s file. A clinic refusing them is not being obstructive; it is doing exactly what the rule says.
The window is before the handover, not after
Goodwill is at its highest on the day the animal moves and decays steadily afterwards. Phone numbers change. A rehoming that ended badly does not produce a cooperative signature six months later. Ask while the handover is still happening.
| Travels with the animal | Needs an authorization | Gone if nobody asked |
|---|---|---|
| The microchip number, in the animal | Clinic history and procedure notes | Exact vaccination dates |
| Any paperwork physically handed over | Vaccination certificates on file | Which medication, at which dose |
| What a new vet can see on examination | Lab results and imaging | The weight trend over years |
The right-hand column is the loss that is hard to explain until it bites. A veterinarian can examine the animal today. Nobody can examine last year.
What to ask for
Ask for the full record rather than a summary. A summary is somebody else’s judgement about what mattered, written without knowing what you will be asked for.
- Vaccination dates, which are what boarding, grooming and travel will want, and which the vaccine records piece covers in more detail.
- Medications with doses, not names alone.
- Weights over time, because a single number says little and a trend says a lot.
- Procedure and surgery notes, including anything under anaesthetic.
- The practice’s own contact details, so a future vet can follow up directly.
Then update the microchip registration, which is a separate job and a separate database. The microchip check is the one people postpone and the one that decides whether a found animal comes back to the right person.
When there is nothing to inherit
Sometimes the previous keeper is unreachable, or has died, or a shelter’s own intake record is all that exists. That is a normal starting point, not a failure, and the honest response is to date it. The record begins the day the animal became yours, with a note saying what came before is unknown.
What you should resist is guessing. A vaccination date somebody half remembers is worse than an admitted gap, because it looks like information and gets acted on. Our guide to pet health records covers how to rebuild a history from the visit you are about to have. Moving in with a partner is not a change of ownership, but the clinic treats the new person as a stranger to the file until told otherwise; moving in together with pets covers that update.
Where Dana fits
Dana keeps the record on your side of that boundary. Vaccination dates, medications, weights and your vet’s details live with the pet in your own account rather than only in a practice system you may lose access to, and the Records Vault holds the scanned certificates themselves. When a pet moves between households for real, Dana’s ownership transfer moves the record with the animal instead of leaving the new keeper to start from an empty file.
Questions people ask
Can the previous owner still get the records after the handover?
Yes. They were the client for everything before the handover, so they can ask the practice for a copy later, or authorize it to release the file to you. That authorization is far easier to get on the day the animal moves than six months afterwards.
Can a new owner request the previous owner's vet records?
Not on their own. The AVMA's Model Veterinary Practice Act, which states are free to adopt or adapt, would bar a veterinarian from disclosing client or patient information except on witnessed verbal, written or electronic authorization by that veterinarian's client. The client was the previous owner, so the authorization has to come from them.
What should I ask for before rehoming a pet?
A copy of the full record rather than a summary, and the authorization signed while both people are still in contact. Vaccination dates, medications with doses, weights over time, and any procedure notes are the parts a new owner will be asked for first.
The previous owner is unreachable. What now?
Start a fresh history and say so. A new veterinarian can examine the animal and work from what is in front of them, and the microchip registry may still name the earlier keeper. What nobody can reconstruct is dates, so treat the new record as beginning the day you got them.
Does the microchip transfer the records too?
No. A microchip registration is a contact database, not a medical file, and updating it changes who gets called if the animal is found. The two are separate jobs and both need doing.