Edward Archbold, 32, became unwell shortly after the contest ended and he collapsed in front of the venue, the Ben Siegel Reptile Store in Deerfield Beach, Florida, the Mirror reported.
According to the police, none of the other contestants became ill.
Archbold was taken to a hospital where he was pronounced dead.
Currently, authorities are waiting for port-mortem results to determine the cause of death.
“We feel terribly awful,” store owner Ben Siegel, who added that Archbold did not appear to be sick before the contest, said.
“He looked like he just wanted to show off and was very nice,” he said, adding that Archbold was “the life of the party.”
A statement from Siegel’s lawyer said that all the contestants signed waivers “accepting responsibility for their participation in this unique and unorthodox contest.”