James Mason of Kentucky Fish and Wildlife Resources called the search "like a needle in a haystack," the Clarksville Leaf-Chronicle reported.
The 4 ½ foot-long alligator escaped from a moving pickup truck in Oak Grove, Ky., and scampered off into a cornfield.
The alligator was found in the basement of a home in Oak Grove and was taken to a pet store in nearby Clarksville, Tenn. It was being brought back to Kentucky when it escaped again.
Authorities have been alerting residents of the area about the loose alligator.