510 ILCS 5/17

For the purpose of making inspections hereunder, the Administrator, or his or her authorized representative, or any law enforcement officer may enter upon private premises, provided that the entry shall not be made into any building that is a person's residence, to apprehend a straying dog or other animal, a dangerous or vicious dog or other animal, or an animal thought to be infected with rabies. If, after request therefor, the owner of the dog or other animal shall refuse to deliver the dog or other animal to the officer, the owner shall be in violation of this Act.