No venomous; looks like crocs are okay.
Noelle
Illinois
Category: B*
Summary of Law: No person may harbor, care for, act as a custodian, or maintain in his possession any dangerous animal or primate except at a properly maintained zoological park, federally licensed exhibit, circus, scientific institution, research laboratory, veterinary hospital or animal refuge. "Dangerous animal" means a lion, tiger, leopard, ocelot, jaguar, cheetah, margay, mountain lion, lynx, bobcat, jaguarundi, bear, hyena, wolf, coyote, or any poisonous life-threatening reptile. Persons who had lawful possession of a primate before Jan. 1, 2011, from continuing to possess that primate if the person registers the animal by providing written notification to the local animal control administrator on or before April 1, 2011. There are no state requirements for a person possessing other exotic species not defined as "dangerous animals."
Citation: ILL. REV STAT, ch. 720, para. 585/0.1, 585/1, 585/2, and 585/3