A pet record app could give owners one organised place for documents and everyday instructions. It should show dates and sources clearly so an old uploaded record is not mistaken for a current professional confirmation.
Owners could share selected information with an authorised sitter or carer for a limited period. Feeding instructions and emergency contacts may need different access from financial documents. Users should be able to revoke sharing and remove obsolete records.
Prototype around a real handover to a sitter. Test a changed instruction, an expired document and access after the booking ends. The app can improve organisation, but it should not interpret vaccination records as medical advice or assume that an uploaded file satisfies every provider's acceptance requirements.
Related reading: Customer Portal Development.