We’ve been bringing Blanca, our dog, for years. There’s paperwork needed to be done in the US by a vet that has the proper authority. Then send it to your states capital to get the appropriate stamp of approval. When you arrive (Only done this through EZE), you skip the long line for baggage scan, and go to the SENASA booth on the right hand side. They’ll look over your paperwork assess a fee that you’ll have to pay at the next booth, back to SENASA, and they’ll hand you the appropriate paperwork. All in all likely took less time than standing in the line. Caveat: My wife is an Argentine citizen and my Spanish is lacking so there may have been more going on there than I realized or remembered.