Ill. Admin. Code tit. 17, § 635.20
a) Mammalia: Cervidae
4) All cervids entering Illinois must be accompanied by a permit from the Illinois Department of Agriculture and a Certificate of Veterinary Inspection that:
B) is approved by the Animal Health Official of the state of origin;
F) lists each cervid's unique individual identification (approved ear tag, tattoo or microchip).
b) Other Animals
All other animals are exempted from this Section.