A dog traveling from and originating in the United States needs specific New World screwworm inspection paperwork to enter Mexico under the rules that took effect August 3, 2026. The US Department of Agriculture says the certificate must be signed by a USDA-accredited veterinarian and issued no more than five days before entry. The agency says this document does not need an additional APHIS endorsement. These instructions cover the US-origin dog route and should be checked against your dog’s actual travel history. USDA APHIS dog travel to Mexico
Book for the date you will cross
Use the crossing date, not the day you pack, when you speak to the veterinary practice. Ask whether the veterinarian can issue the current certificate and confirm what information the practice needs. Keep a printable copy with your travel records. SENASICA confirmed the bilateral inspection requirement. APHIS also explains the arrival inspection process. Check what to expect at the port where you will enter. A change to the itinerary can change whether the certificate falls within the required window. SENASICA inspection certificate announcement
Book enough time to arrange the US return requirements as a separate step. In particular, ask what screwworm evidence is needed from the Mexican side before your dog re-enters the United States. The paperwork signed before you leave the US serves the southbound crossing.
