Customs Department Director-General Prasong Poontaneat says many of the reptiles found are banned from international trade. They were discovered when an Indian traveler arriving from Bangladesh failed to retrieve his bags.
Prasong said the animals would be held for evidence and taken care of by wildlife officials.
Thailand is a hub for the illegal wildlife trade. A smuggling attempt thwarted last month involved two leopards, two panthers, an Asiatic black bear and two macaque monkeys -- all juveniles about the size of puppies.