Pet owners should verify and update their contact information in the microchip database at least annually to ensure it remains current. Additionally, it is crucial to update this information any time there is a change in address, phone number, or ownership. Keeping contact details up-to-date is essential for the effectiveness of the microchip in case the pet becomes lost. Many registries offer online portals where updates can be easily made, facilitating quick adjustments whenever necessary to maintain accurate and timely information.