Vetco Vaccination Clinic in Santee delivers appointment-based preventive immunization services inside the Petco location on Mission Gorge Road, operating independently from the full-service Vetco Total Care hospital at the same address. The clinic's core vaccine menu covers rabies, DHPP (distemper-hepatitis-parainfluenza-parvovirus), and FVRCP for felines — the same documentation required for campsite reservations permitting animals at Santee Lakes Campground on Fanita Parkway. Region-specific add-on vaccines include leptospirosis, Bordetella, Lyme, canine influenza, and rattlesnake antivenin pre-treatment calibrated to East County terrain exposure. Feline Leukemia (FeLV) vaccination targets outdoor and multi-cat households where horizontal transmission risk exceeds baseline. Microchipping pairs with the vaccination visit, providing ISO-standard 15-digit identification that group activity providers such as Doggie Hiking cross-reference against lost-pet registries. Vaccination records generated at each appointment include lot numbers and manufacturer data required for county rabies-tag registration, boarding-facility intake, and California interstate travel health certificates.