It really depends on the country you're travelling to. Different countries have different rules and regulations regarding on bringing pets in. My sister brought her dog to Thailand before, and all she needed was just a health certificate.
I got the info below from Delta... hope it helps..
- Contact the embassy / consulate of the destination country to determine pet travel regulations.
- Obtain all necessary paperwork (i.e. health certificates).
- Contact your local vet to ensure your pet in is compliance with foreign health regulations.
- Check with the CDC about bring pet back into the U.S.
- Check with APHIS about international animal export regulations.
Here's the link for the page on Delta website:
http://www.delta.com/planning_reserv..._pet/index.jsp
Good luck.