CO 1151 states that the only animals, fish, fowl, amphibians, insects, reptiles, or other non-human creatures that may be raised, bred, or intentionally kept on a residential lot are those that meet certain standards. such creatures must be a dog, cat, or other specie of animal, fish, fowl, amphibian, or reptile which species is commonly deemed in this city to be tamed and domesticated, or which is commonly deemed to be a pet kept inside a residence.