You don’t need to know much about pet transport within Mexico. It’s possible that you might be pulled over by a policeman who tells you that your dog needs to be in a crate, but he’s looking for a “roadside fine” more than he actually cares about whether your dog’s out and about or not. In other words, he’s looking to shake you down. I know people who have had that incident happen. Realistically, though, I have my dog on the front seat of my car and I don’t care.
I imported three dogs to Mexico when I came from the Caribbean. To get your dog or cat into Mexico, you have to make absolutely sure that your paperwork is 100% accurate, or you’re going to spend a few nights in the customs department of wherever you go. Make sure that your pets have had their vaccinations, that you have all the required paperwork that you need, and that the dates of the vaccinations are within their rules, because if your dog was vaccinated three months ago, that’s not going to do it. It has to be within a certain amount of time. In short, everything should be taken care of, and then it’s okay to bring your pets in.
If the people at the customs can find a problem, they will find a problem. The default answer to any question that has anything to do with red tape in Mexico is “No.” This is a thing about red tape here in Mexico that is specific to dogs: if you get it perfectly, the process is as smooth as silk. If there is one letter out of place, you’re done. It’s going to take you months to put it right. You have to do your preparation.
((The dogs of the owners of Best Places of the World to Retire drinking the water on the sly in Mexico, pictured.)