Bernese mountain dogs are the national dog of Switzerland. They originated in the Swiss Alps in the Canton of Bern, hence the name. It is possible for them to live in Florida. But it is something that needs to be planned early on. First of all, you can have a dog shipped to you after it has been fully vaccinated and dewormed. They are more tolerant of heat, but they can still get overheated. Do not over-expose the Bernese mountain dogs to the sun for a long period of time. You need to be cautious in exposing the dog to too much heat.