Valen Ganev, who works as a spokesman for a Web site that specializes in reptiles, said after returning the crocodile, named Taggen, that the facility does not properly house its reptiles, Aftenposten reported Tuesday.

"Several of the animals couldn't hide from one another," he said. "Many of the crocodiles live in fear. It was sad to see them suffer in this way."

Ganev said he is prepared to accept the consequences for the crocodile kidnapping.

Kees Ekeli, managing director of the aquarium, called the admitted reptile kidnapper's claims "idiotic."

"This is the stupidest I've heard," Ekeli said. "We do all we can so that the animals can have a good life, and they do, really."

Ekeli said the facility is working to improve security.