International borders with dogs

[rhummer92]

Hey guys, I'm thinking about hitchhiking/ ride sharing ect from the US through Mexico to South America. Bringing my dog along, he's a 5 year old lab mix, been by my side since 4weeks old.

I'm currious what anyone knows about crossing the borders in Central America with dogs as well as crossing into South America on foot with pets.

Does anyone have experience crossing borders with their dogs?

Thanks and much appreciated !