What regulations govern pet air travel?

Answer 1

The rules regarding pet travel are determined by the individual airline. For travel within the U.S., the airlines can ask for a health certificate, but most do not. Travel outside the country requires various documentation and can include restrictions, depending on the destination. The airline will have specific information about the manner in which an animal is crated, the size of the crate, the type of crate and the security of the crate. An additional fee can be assessed for pets that need special attention on long flights and for pets that are traveling alone. Because rules change from time to time, and because not all airlines are the same, check to verify the information each time your pet travels.