Michigan Compiled Laws, Chapter 287. Animal Industry § 287.308

Sec. 8. Any person who shall steal or take without the consent of the owner and without lawful authority, any dog registered under the provisions of this act, or any person excepting dog wardens who shall harbor or hold in his possession any stray dog of which he is not the owner and does not report such possession to the sheriff of the county or the police department of the city in which he is holding such dog within 48 hours after such person came in possession of said dog, where the value of such dog shall not be in excess of $100.00, shall be guilty of a misdemeanor, and where the value of such dog shall be in excess of $100.00, shall be guilty of a misdemeanor and upon conviction thereof shall be fined not less than $50.00 nor more than $500.00, or imprisoned in the county jail for not more than 1 year, or both such fine and imprisonment in the discretion of the court.