I do request vaccination records to be current and a copy of the rabies certificate. I have an information sheet for each dog which asks if vaccinations are current. Another form I have them sign is an emergency contact form. The owner gives me two people to contact in case I cannot reach the owner. Also on the form is permission to treat at their vet. The form is dated for the duration of the stay. I always get a signature. Never know when you may have a medical emergency.