I did it last week. Its way easier than you think if you're flying with your dog. LAN seems to be the easiest. I've done it a few times, but this time we've moved bacj to the USA. ALL you need is a "certificado de salud" and a vacunizacion certificate from a vet. I thought it needed to be a bilingual vet or something and this time just went to my local barrio vet. S/. 150 for all her shots, frontline treatment etc. Get a good kennel, be sure they have space needed to turn around. Call airline to be sure you have a spot and you are good to go. Do certificates 10 days before leaving. You dont need any permissions other than those. Airline will ask the breed.... there are a few limits on breeds (no pit bulls, bull dogs, pugs, those who have a ahrder time breathing). When I got through immigration, I got my dog, they asked if I had dog food, 1 meal worth was fine to have and we were done. SO EASY. I did direct Lima to LA and that means she was only in the crate a total of about 11 hours, like all night. Some airlines require medicating the dog, some dont allow it. I tire mine out, take her potty a few times and give her a half of a dose so she is sleepy but aware. Easy as pie!