check on the country's website (they should have an official gov website). Honduras is just south of Belize, where my vacation house is. To import into belize, you only need a health certificate from a vet. There are a whole slew of tropical fly and mosquito borne diseases in central america (both human and animal), but the purchaser should be able to tell you what immunizations to get. they would have to bodyclip year round down there, as it is alot warmer than even southern cal year round. make sure that everything is legitimate, as the US would not ever let them cross back from central america (due, I believe to either encephalitis or sleeping sickness being endemic in horses down there.)