Last updated August 20, 2026 · Independent guide — not affiliated with USDA or SENASICA
Bush Intercontinental and Hobby together run some of the highest Mexico-bound flight volume in the country — Mexico City, Cancún, Monterrey, Guadalajara and more. Houston's size means many accredited vets, but few front-desk teams know the new NWS form by name yet; ask for it exactly: the NWS Inspection Certificate for Pet Dogs.
The requirement: since August 3, 2026, dogs entering Mexico from the US must carry an NWS Inspection Certificate signed by a USDA-accredited veterinarian within 5 days of arrival in Mexico. No APHIS endorsement is needed — the signed form is presented at the Mexican border or airport. Full guide here.
Vets offering screwworm certificates in Houston
We're verifying Houston clinics now.
This requirement is weeks old and clinic participation is changing daily. Used a Houston vet for your NWS certificate? Tell us and we'll list them for the next traveler.
Can't find an accredited vet in Houston?
- Call clinics that advertise international health certificates — they're the most likely to have a USDA-accredited vet on staff.
- Ask the exact question: “Can a USDA-accredited veterinarian at your clinic complete the NWS Inspection Certificate for Pet Dogs going to Mexico?”
- Contact the Texas USDA APHIS Veterinary Services office for a referral, per the official APHIS guidance.
- Download the form ahead of your appointment from the APHIS Mexico pet travel page — many clinics haven't seen it yet.
How to find a USDA-accredited vet →
Are you a Houston veterinarian issuing NWS certificates? Get listed — free while the directory grows.