Final answer:
The contact information for the pet's owner is found in the Patient Demographics section of the medical record, which provides essential details for veterinary staff to maintain communication with the owner.
Step-by-step explanation:
The section of the medical record that contains contact information for the pet's owner is the Patient Demographics section. This section includes essential details about the pet owner such as name, address, phone number, and possibly alternative contacts. It serves as a foundational part of the medical record, enabling the veterinary staff to maintain communication with the pet owner for any necessary follow-up or notification regarding the pet's health status.