Mexico pet paperwork: dogs and cats now follow different rules.

Dogs: the entry paperwork changed in August 2026

For pet dogs originating in and traveling from the United States, Mexico now requires a New World screwworm inspection certificate from a USDA-accredited veterinarian. It must be issued no more than five days before entry. This document does not require APHIS endorsement. Use the form linked from the official APHIS Mexico page.

Cats: a different process

US-origin pet cats do not need a health certificate or NWS inspection document to enter Mexico. SENASICA inspects them on arrival. Do not add a cat to a dog inspection form.

Before you book

• Ask your airline about its own document and pet-carriage requirements.
• Tell the vet your entry date so any required inspection falls within the correct window.
• Plan return-to-US requirements separately with your vet; Mexico entry paperwork does not cover re-entry.

These notes cover the standard US-origin dog and cat route. Check the official species-specific instructions for other origins or circumstances.