No quarantine, no visa. And yes, we have good vets here. American Airlines has particularly good and caring pet-travel programs. These fellows don't charge much for their services, and in the end will save you enormous amounts of time, energy and money. Ask us for recommendations of good brokers.
Good insurance is available here.
Most carriers are re-insured through companies in the US and England. Public education in Belize stresses a solid English curriculum. In many areas the local schools are over-crowded, making individual attention difficult. In this case a motivated child will get a good education, but one with special needs may fall behind. There are alternative schools throughout the country that specialize in small classrooms and personalized programs.