I'm visiting my parents in Brazil in November for 19 days and I'm taking Lucas with me because I don't have anyone that can take care of him, to board him will be too stressful (don't want him to think mom abandoned him and put him back in the shelter), and because he is really attached to me and loves company a pet sitter who only stays half hour won't cut it, and at the end, all these options will be more expensive than the flight and the documents needed.
Even when going to the vet he's quiet and I already made his reservation on the plane to stay in the cabin with me. Our dog will go to my grandparents, since he loves it over there anyway, and it's only 5 minutes away, but this will help avoid any stress on Lucas.
I'm a bit nervous, but after a lot of thinking this is definitely the best decision for Lucas. What sort of documents do you need when entering the US? I found out about the documents going to Brazil, but not sure if I can use the same to come back with him.