Last updated August 20, 2026 · Independent guide — not affiliated with USDA or SENASICA
McAllen and the Rio Grande Valley feed the Hidalgo, Pharr and Anzalduas bridges into Reynosa. The Valley has a dense cluster of veterinary clinics, but USDA accreditation is the sticking point — always confirm the signing vet holds current accreditation before booking.
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 McAllen
We're verifying McAllen clinics now.
This requirement is weeks old and clinic participation is changing daily. Used a McAllen vet for your NWS certificate? Tell us and we'll list them for the next traveler.
Can't find an accredited vet in McAllen?
- 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 McAllen veterinarian issuing NWS certificates? Get listed — free while the directory grows.