Banned breeds in Thailand are:
American Staffordshire Terrier
Pit Bull breeds that include American Pit Bull Terrier, American Bully, American Bulldog and Staffordshire Bull Terrier
While it is not illegal to own these breeds in Thailand, the import of these breeds is prohibited by law. These breeds are banned for import in many countries around the world for several reasons. They have broad, strong jaws which means they can inflict great harm when they attack. They are strong, large-sized dogs that are not always easy to control. Though not all dogs of these breeds are aggressive and unfriendly, breed-specific legislation assumes that these breeds are vicious because of the history of attacks and dog bites by these dogs.