Any person who shall steal, or confine and secrete any dog licensed under this act or kept under a kennel license, unless legally authorized to do so, or unless such confining be justifiable in the protection of person, property or game, shall be guilty of a misdemeanor, and upon conviction thereof shall be subject to a fine of not less than $50.00 nor more than $100.00, or imprisonment in the county jail for not less than 60 nor more than 90 days, or both in the discretion of the court.