Here you go:
http://wildlife.state.co.us/Education/CoExisting_with_wildlife/exotic_pets_prohibited_wildl.asp
Legal Non-Mammals
These are the non-mammal species that are legal to own in Colorado:
All tropical and non-native subtropical turtles. Caimens are legal. Alligators and crocodiles require a license.
All other species of native and exotic wildlife require a license from either the Division of Wildlife or the state Department of Agriculture. To have or import one of these species, you must get a license first. You can get importation permits from the Department of Agriculture after obtaining a license from the Division of Wildlife.
For more information, contact the following agencies:
Wildlife Questions
Colorado Division of Wildlife - Mark Leslie
317 W. Prospect, Fort Collins, CO 80526
(970) 472-4300
Alternative Livestock, Importations, Humane Care or Pet Questions
Department of Agriculture - State Veterinarians
700 Kipling St., Suite 4000, Lakewood, CO 80215
(303) 239-4161
Human Health Questions
Colorado Department of Public Health - John Pape
4300 Cherry Creek Dr. South, Denver, CO 80222
(303) 692-2700