I have the definitive solution for those moving pets to Ecuador. Continental Airlines has the only pet cargo service which will transport your pet regardless of the heat en route. They use air conditioned vans to bring animals from the terminal to the flight, all pets are in climate-controlled cargo area. Some pets may have to be delayed due to too much cargo (they are secondary after US mail, and only flight goes to Quito a day) but there is a state of the art boarding kennel with exercise runs at Houston airport, run by Continental. They will even groom him/her! Phone staff is extremely knowledgablle.