MI SB1503

Establishes the "Commercial Dog and Cat Breeder Act" to regulate breeders possessing 25 or more unaltered dogs or cats over 4 months old intended for sale as companion animals.

Requires commercial breeders to obtain a license from the Department of Agriculture, with an initial application fee of $200 (until September 30, 2012) and renewal fee of $100, or $150 after that date.

Mandates Department inspection of premises before license issuance and requires breeders to provide veterinary health certificates documenting vaccinations before selling dogs or cats.

Specifies required vaccinations: dogs must receive CPV-2, CDV, CAV-2, and rabies; cats must receive panleukopenia/herpesvirus-1/calicivirus and rabies at age-appropriate times.

Authorizes the Director to suspend/revoke licenses and impose administrative fines up to $1,000 per violation, with violations classified as misdemeanors; fees deposited into the agriculture licensing and inspection fees fund.