Puppy Mill Laws in Michigan: What Breeders, Buyers, and Animal Advocates Need to Know

Michigan does not use the phrase “puppy mill” anywhere in its statutes — but that does not mean large-scale commercial breeding operations go unregulated. The state has built a layered framework of licensing requirements, care standards, and criminal penalties that directly targets the conditions associated with puppy mills, even if the label itself never appears in the law.

Whether you are researching a breeder before buying a puppy, concerned about a facility near you, or simply trying to understand how Michigan handles commercial dog breeding, knowing the legal landscape helps you make informed decisions and take effective action when something looks wrong.

What Is Considered a Puppy Mill in Michigan

Michigan law does not define the term “puppy mill” in any statute. What the law does define — and regulate — are large-scale commercial breeding operations based on the number of dogs they house and the conditions in which those dogs are kept.

In practical terms, a puppy mill is a high-volume breeding facility where dogs are bred repeatedly, often in overcrowded or unsanitary conditions, with little regard for the animals’ health or socialization. Puppies born in large breeding facilities are often inbred and housed in small, overcrowded, and squalid cages that expose them to genetic diseases, parasites, and deadly viruses. The absence of adequate veterinary care, exercise, and human contact are hallmarks that animal welfare advocates and prosecutors use to identify these operations.

Under Michigan law, the closest legal equivalent to a “puppy mill” is the Large-Scale Dog Breeding Kennel (LDBK) — a specific classification triggered when a breeder exceeds a defined threshold of intact female dogs. If you have more than 15 intact female dogs that have whelped, you must register as a Large-Scale Dog Breeding Kennel with the Michigan Department of Agriculture and Rural Development (MDARD), which carries strict additional requirements. Operations with more than 15 intact females must register with MDARD as large-scale breeders.

It is worth understanding that the LDBK threshold is a legal trigger, not a moral judgment. A facility can meet the registration threshold and still operate legally — or it can operate far below that threshold and still be in violation of animal cruelty laws if the conditions are inadequate.

Key Insight: Michigan law focuses on the number of intact breeding females and the conditions of care — not on the “puppy mill” label — when determining which regulations apply to a breeding operation.

Federal Law and How It Applies in Michigan

Before examining Michigan’s own statutes, it helps to understand the federal layer that sits on top of them. The federal Animal Welfare Act (AWA) applies to commercial breeders across the country, including those operating in Michigan.

The primary federal law governing commercial dog breeders is the Animal Welfare Act. Enforced by the United States Department of Agriculture (USDA), this law requires certain breeders to be licensed and inspected. The AWA sets minimum standards for animal care, covering housing, sanitation, nutrition, water, and veterinary attention.

The AWA applies to breeders with more than four breeding females who sell puppies to wholesalers, brokers, pet stores, or sight-unseen to consumers online. Smaller-scale or “hobby” breeders who sell directly to the public face-to-face are exempt from these federal regulations.

At the federal level, the USDA’s Animal and Plant Health Inspection Service (APHIS) is responsible for inspecting breeders licensed under the Animal Welfare Act. However, federal oversight has well-documented gaps, and USDA licensing does not guarantee humane conditions. Many of Michigan’s licensed pet stores imported puppies from large-scale breeders, also known as puppy mills, that had recently been cited by the U.S. Department of Agriculture, according to a Humane Society of the United States investigation.

This is why Michigan’s own state laws matter so much. Federal standards are a floor, not a ceiling, and Michigan’s LDBK framework adds a separate, state-level layer of oversight for the largest breeding operations. You can review how pet laws in Michigan work more broadly to see how federal and state frameworks interact across different animal categories.

Important Note: A USDA license does not mean a facility is free from problems. Michigan’s state laws impose additional requirements beyond what federal law mandates, and both sets of rules can apply to the same operation simultaneously.

Does Michigan Have Puppy Mill Laws

Michigan does not have a law titled or explicitly labeled as a “puppy mill law.” What it does have is a set of statutes that collectively regulate large-scale commercial breeding in ways that directly address the conditions associated with puppy mills.

The centerpiece is Michigan’s Large-Scale Dog Breeding Kennel statute, which was enacted to impose stricter oversight on the highest-volume breeders in the state. In response to growing concern for the welfare of animals trapped in puppy mills, dog lovers adopted two legal strategies to fight back: stricter laws for breeders (such as Michigan’s Large Scale Breeder law) and local ordinances banning the sale of puppies in pet stores.

Michigan is among the states that require breeders to be licensed and regularly inspected, placing it in a category of states with more active oversight than those that impose no licensing requirements at all. That said, advocates have long argued that Michigan’s framework still falls short of what is needed to eliminate inhumane conditions at high-volume facilities.

Beyond the LDBK statute, Michigan’s animal cruelty laws under the Michigan Penal Code apply to breeders just as they do to any animal owner. Anyone who owns or has custody of an animal — including a pet shop owner or breeder — can be charged with a misdemeanor for mistreatment, with stepped-up penalties when more animals are involved.

Michigan also regulates standard commercial kennels at the county level under the Dog Law of 1919. Standard commercial kennels — boarding, training, and breeding operations with three or more dogs kept for pay — are licensed at the county level under the Dog Law of 1919. This means that even smaller breeding operations that do not reach the LDBK threshold are not entirely unregulated. For a closer look at how zoning intersects with these licensing categories, see kennel zoning laws in Michigan.

Commercial Breeder Licensing and Inspection Requirements in Michigan

Michigan’s licensing requirements for breeders operate on two tiers, depending on the size of the operation. Understanding which tier applies to a facility tells you a great deal about what oversight it is subject to.

Standard Kennel Licensing

In Michigan, you typically need a kennel license if you keep three or more dogs for breeding, boarding, sale, or training. State law requires kennel owners to obtain a license from the county treasurer, with fees based on the number of dogs. The director of the department of agriculture shall promulgate reasonable rules with respect to inspections. The inspection shall be made not more than 30 days before filing the application for a license.

Large-Scale Dog Breeding Kennel Registration

Once a facility crosses the 15-intact-female threshold, a separate and more demanding set of requirements kicks in at the state level. Dog breeders in Michigan who house more than 15 intact female dogs that have whelped must register annually with the Michigan Department of Agriculture and Rural Development (MDARD) as a Large-Scale Dog Breeding Kennel, paying a $500 fee and meeting strict standards for animal care, housing, and record-keeping.

The LDBK classification also comes with specific rules about how dogs can be sold:

• A large-scale dog breeding kennel cannot sell, exchange, or transfer a dog that is less than eight weeks old.
• A large-scale dog breeding kennel must provide a valid pet health certificate with any dog that is sold, exchanged, transferred, or delivered.
• Annual re-registration with MDARD is required, and facilities must maintain detailed records of their breeding animals and transactions.

Pro Tip: You can search for MDARD-licensed facilities through the MDARD license search tool on the Michigan government website. Verifying a breeder’s registration status before purchasing a puppy is one of the most practical steps you can take as a buyer.

Local Zoning Considerations

Local zoning, business permits, and liability insurance also play a role, so operators should confirm county or city rules before opening. Michigan does not have a single statewide zoning code. Instead, cities, townships, and counties each adopt their own zoning ordinances, which means the districts where kennels are permitted vary significantly from one jurisdiction to the next. This means a breeding operation that is legally licensed at the state level may still face restrictions or prohibitions under local ordinances.

Pet Store Sale Restrictions in Michigan

Michigan does not have a statewide ban on pet stores selling puppies sourced from commercial breeders. This places it in a different category from states like California, New York, Illinois, and others that have enacted statewide retail sale prohibitions. States that have prohibited the retail sale of puppies and kittens in pet stores include California (2017), Maryland (2018), Maine (2019), Washington (2021), Illinois (2021), New York (2022), Oregon (2023), and Vermont (2024). Michigan is not among them at the state level.

However, Michigan does impose baseline requirements on pet shops that sell dogs:

• A person who operates a pet shop shall not sell, exchange, transfer, or offer for sale, exchange, or transfer a dog or cat that is less than 8 weeks old.
• A person who operates a pet shop or a large-scale dog breeding kennel shall not sell, exchange, transfer, or deliver a dog, cat, or ferret without providing to the purchaser a valid pet health certificate. A pet health certificate is only valid for 30 days after the date the animal was examined by the veterinarian who signed the certificate.
• Pet shops must also comply with vaccination requirements for any dog imported into Michigan before the dog enters the state.

Hundreds of puppies sold at Michigan pet stores since 2021 have come from large, out-of-state breeders with a troubling history of raising animals in substandard, inhumane conditions, according to state and federal records. This has fueled ongoing legislative efforts to strengthen restrictions.

Local Ordinances Filling the Gap

In the absence of a statewide ban, several Michigan municipalities have passed their own ordinances restricting or prohibiting the retail sale of puppies. More than 475 communities nationwide have passed similar ordinances, including Eastpointe, Fraser, New Baltimore, Royal Oak, St. Clair Shores, Berkley, Ann Arbor, Woodhaven, and Harbor Springs in Michigan, according to the Humane Society.

If you live in one of these communities, your local ordinance may be stricter than state law. Checking with your city or township is the best way to confirm what rules apply to pet stores in your area. Michigan does not currently have a statewide pet store preemption law blocking these local ordinances, which means municipalities retain the authority to enact them. You can also explore how animal cruelty laws in Michigan relate to conditions in pet stores and breeding facilities.

Common Mistake: Assuming that a puppy sold at a pet store came from a reputable breeder because the store claims it is “USDA licensed” or “AKC certified.” These labels do not guarantee humane conditions, and many Michigan pet stores have sourced animals from facilities with documented violations.

How to Report a Suspected Puppy Mill in Michigan

If you encounter what you believe is an inhumane breeding operation, you have several reporting avenues available. Acting on credible concerns can trigger inspections and, when violations are confirmed, enforcement action.

Who to Contact

• Michigan Department of Agriculture and Rural Development (MDARD): For concerns involving a registered Large-Scale Dog Breeding Kennel or a pet shop that may be violating importation or sale requirements, the MDARD Animal Industry Division investigates reportable diseases and the importation of animals to a pet shop. To report a reportable disease at a pet shop or a case of improper importation, call MDARD at 800-292-3939.
• Local animal control: If you see or hear an animal that appears to be abused, mistreated, or neglected, contact your local animal control agency, law enforcement, or the humane society. Local animal control officers have authority to investigate conditions at breeding facilities and kennels.
• Local law enforcement: For situations involving apparent criminal animal cruelty, local police or the county sheriff’s office can initiate an investigation. In Michigan, each local humane society may have a deputy sheriff to investigate and prosecute animal cruelty.
• The Humane Society of the United States: The HSUS maintains a national reporting resource and has conducted investigations into Michigan pet stores and their breeder supply chains.
• USDA APHIS: For federally licensed breeders, you can file a complaint with the USDA Animal and Plant Health Inspection Service, which oversees AWA compliance and conducts inspections of licensed commercial breeders.

What to Document Before You Report

When reporting a suspected puppy mill, the more specific information you can provide, the more useful your report will be to investigators. Consider documenting the following:

1. The facility’s address and, if known, the operator’s name
2. A description of the conditions you observed — overcrowding, visible illness, unsanitary conditions, lack of shelter or water
3. The approximate number of animals present
4. Dates and times of your observations
5. Any photographs or videos, if you were lawfully able to take them
6. Names of any witnesses who observed the same conditions

You do not need to be certain that a law is being violated to file a report. Animal control and MDARD investigators are trained to assess conditions and determine whether a violation has occurred. Your role is to provide what you observed, not to make a legal determination. If the concern also involves brucellosis or other infectious diseases at a breeding facility, MDARD’s Animal Industry Division handles those reports as well.

Penalties for Puppy Mill Violations in Michigan

Penalties for violations related to puppy mill conditions in Michigan come from two primary sources: the state’s animal cruelty statutes under the Michigan Penal Code, and the administrative enforcement provisions tied to LDBK registration and kennel licensing.

Animal Cruelty Penalties

Michigan’s animal cruelty law scales penalties based on the number of animals involved and the nature of the conduct. The Michigan Legislature has designed three primary provisions related to cruelty to animals: intentional infliction of pain and suffering, duty to provide care, and anti-animal fighting. The intentional infliction of pain and suffering provision carries the most severe penalties for animal cruelty and a violation is automatically a felony. A violation of the duty to provide care provision is initially a misdemeanor, which becomes a felony for a second or subsequent violation.

The penalty tiers under Michigan’s duty-of-care statute (MCL 750.50) are as follows:

Number of Animals / Circumstances	Classification	Maximum Jail / Prison	Maximum Fine	Community Service
1 animal	Misdemeanor	93 days	$1,000	Up to 200 hours
2–3 animals or death of any animal	Misdemeanor	1 year	$2,000	Up to 300 hours
4–10 animals or prior conviction	Felony	2 years	$2,000	Up to 300 hours
More than 10 animals or 2 prior convictions	Felony	4 years	$5,000	Up to 500 hours

Breeders and pet shop operators face elevated penalties under Michigan law. If the person is a breeder, or if the person is an operator of a pet shop and has had 5 or more prior convictions for violating the relevant statute, the person is guilty of a felony punishable by imprisonment for not more than 2 years or a fine of not more than $5,000, or both.

Intentional Cruelty Penalties

For intentional cruelty under MCL 750.50b, the intentional infliction of pain and suffering provision carries the most severe penalties for animal cruelty, and a violation is automatically a felony. There is no misdemeanor entry point — every violation of MCL 750.50b is a felony charge from the outset.

Anyone found guilty of torturing or killing a companion animal in order to control or terrorize someone — for instance, in cases of animal cruelty as a form of domestic violence — can face up to 10 years in prison, a $5,000 fine, and 500 hours of community service.

Animal Seizure and Ownership Bans

MCL 750.53 provides that a person violating any of the animal cruelty statutes may be arrested without a warrant, similar to the arrest of those found disturbing the peace. Further, the official making the arrest has a duty to seize the animals involved and place them in the custody of the jurisdiction.

Defendants also may be ordered not to possess or own an animal for a certain period of time or forever. A person found in violation of a “do not own or possess” order is subject to immediate revocation of probation and almost certain jail time. In 2026, Michigan courts can also require defendants to pay for the housing and veterinary bills of seized animals while a case is pending — a cost-of-care bond that can add significant financial pressure even before a conviction.

Administrative Consequences

Beyond criminal penalties, a breeder or kennel operator found in violation of LDBK registration requirements or kennel licensing rules can face administrative action from MDARD, including denial or revocation of registration. Operating as a Large-Scale Dog Breeding Kennel without proper registration is itself a violation of state law and can expose an operator to both administrative and criminal consequences.

Understanding the full range of penalties underscores why compliance with Michigan’s breeder laws matters — both for the animals in these facilities and for the operators who run them. If you are also navigating related questions about animal ownership or custody, the pet custody laws in Michigan page covers how courts treat companion animals in legal disputes, and Michigan pet laws offers a broader overview of the state’s animal regulatory framework.

What You Can Do

Michigan’s puppy mill laws create real obligations for large-scale breeders and real consequences for those who violate them — but enforcement depends heavily on reports from people who witness problems firsthand. As a buyer, you can protect yourself by verifying a breeder’s MDARD registration status, asking to visit the facility in person, and reviewing any health certificates carefully before completing a purchase.

If you are considering adding a puppy to your household, understanding the basics of responsible ownership is just as important as knowing the law. Resources like when a puppy can eat dry food and the benefits of raising a puppy and kitten together can help you prepare for a new pet’s arrival. And if you have broader questions about animal regulations in the state, the dog leash laws in Michigan page covers another area of state law that affects dog owners directly.

Reporting suspected violations, supporting local ordinances that restrict pet store sales, and choosing breeders who operate transparently are all meaningful ways to contribute to better conditions for dogs across Michigan.