Use a multi-value speciesTreated column. A vet who treats reptiles and small mammals but not birds shows up on the reptile and small-mammal hubs but not the avian hub. The same row powers all relevant species hubs without duplication, and you can refine the species list per practice as their scope shifts.

Add an abvpCertification column listing the specialty (Avian, Reptile and Amphibian, Exotic Companion Mammal). A vet board-certified in Avian Practice is a meaningful trust signal that flat 'ABVP yes/no' fields wash out. Use a selector mapping to render the certification specialty as a visible pill, not just a checkmark.

Yes. Add a vouchedBy array column listing the organizations (Avian Welfare Coalition, Mid-Atlantic Reptile Rescue, etc.). Render as a logo strip via list mapping. Community-vouched listings carry significant weight in the exotic-pet world, and surfacing them explicitly converts users who would otherwise wait for a forum recommendation.

Add a safeAnesthesiaFor multi-value column listing species the practice safely anesthetizes (reptile, avian, small mammal). Anesthesia for non-mammalian species is the highest-risk procedural decision in exotic medicine, and surfacing capability here drives referral traffic from general-practice vets, not just owners.

Yes. Add an emergencyForExotics column with values like 24/7, after-hours-by-phone, or none. Most general emergency vets cannot handle a bleeding parrot or a prolapsed bearded dragon, so a dedicated /exotic-vets/emergency/{city}/ hub serves a real and underserved search intent.

Yes, but consider an affiliation column to distinguish private exotic practices from zoo veterinarians or licensed wildlife rehabbers. The audiences and scope differ enough that a single bucket confuses users. A separate /wildlife-rehabbers/{state}/ page group draws from a filtered subset of the same sheet.

The page-group system handles country segments cleanly. Add a country column and use a /exotic-vets/{country}/{species}/{city}/ pattern for international directories. Each country may have different certification bodies (RCVS in the UK, for example), so the credential column needs flexibility per country.

Schedule a quarterly review of the sheet where the directory operator emails each practice to confirm species treated, ABVP status, and anesthesia capability. Exotic vets often add species as new techs train up, and the directory loses trust quickly if a listed reptile practice has actually phased out reptile care.