510 ILCS 60/1

All birds and animals ferae naturae or naturally wild, including fur bearing animals not native to this State, when raised or in domestication, or kept in enclosures and reduced to possession, are hereby declared to be objects of ownership and absolute title, the same as cattle and other property, and shall receive the same protection of law, and in the same way and to the same extent shall be the subject of trespass or theft, as other personal property.