California has spent years building one of the most aggressive legal frameworks against puppy mills in the United States, and the laws on the books as of 2026 reflect that commitment more than ever. Whether you are a prospective pet owner, a breeder trying to stay compliant, or someone who suspects a nearby facility is operating illegally, understanding how these laws work can help you make informed decisions and take the right steps.
This guide walks you through how California defines a puppy mill, which state and federal laws apply, what breeders are required to do, how pet store sales are regulated, and what happens when someone breaks the rules. You will also find clear guidance on how and where to report suspected violations.
What Is Considered a Puppy Mill in California
California does not use the term “puppy mill” in its statutes, but the concept is well understood in both law and policy. Puppy mills are commercial dog breeding facilities that disregard dogs’ health and safety to maximize profits. They typically keep large numbers of breeding animals in overcrowded, unsanitary conditions with little veterinary care, and they prioritize volume over the welfare of individual animals.
From a legal standpoint, the state draws a line between responsible breeders and commercial operations that exploit animals. In 2019, California led the nation in banning pet stores from selling dogs from commercial breeders, also called puppy mills, which prioritize profits over animals’ welfare. That original ban helped define what a problematic commercial operation looks like under state law.
The Polanco-Lockyer Pet Breeder Warranty Act, codified at California Health and Safety Code § 122045 et seq., sets the threshold for when a breeder is subject to state-level obligations. Under the Act, a “dog breeder” or “breeder” means a person, firm, partnership, corporation, or other association that has sold, transferred, or given away all or part of three or more litters or 20 or more dogs during the preceding 12 months that were bred and reared on their premises. Operations that exceed these thresholds while cutting corners on animal care are the facilities California’s laws target most aggressively.
Key Insight: California law does not require a facility to be enormous to qualify as a commercial breeder. Selling three or more litters in a year triggers legal obligations under state statute.
Federal Law and How It Applies in California
Before diving into California-specific rules, it helps to understand the federal layer that sits above them. The federal Animal Welfare Act (AWA), enforced by the USDA’s Animal and Plant Health Inspection Service (APHIS), sets baseline standards for commercial dog breeders across the country.
The USDA requires a federal license under the Animal Welfare Act for anyone who maintains more than four breeding females and sells dogs sight-unseen — online, by phone, or by mail. This regulation is enforced by APHIS. Small breeders with four or fewer breeding females are exempt, as are those who sell only face-to-face directly to the public.
If you operate a breeding facility in California and meet the federal threshold, you are subject to both federal and state law. USDA-licensed facilities are subject to unannounced inspections by APHIS, and a pre-license inspection is required before your initial license is granted. Inspectors check housing, food, water, veterinary care, sanitation, and space requirements, and they also review your record-keeping.
Since 2023, all USDA animal welfare licenses are valid for three years and must be renewed before expiration, with a flat processing fee of $120.
Important Note: California’s state laws do not replace federal requirements — they add to them. If your operation triggers both thresholds, you must comply with both sets of rules simultaneously.
For more on how California handles other animal-related legal matters, see pet laws in California for a broader overview of the state’s animal protection framework.
Does California Have Puppy Mill Laws
Yes — and California’s puppy mill laws are among the most comprehensive in the country. The state has enacted protections at multiple levels: the original 2019 retail ban, subsequent loophole-closing measures, and a sweeping 2026 legislative package that took effect on January 1, 2026.
Lawmakers introduced the 2026 bills to close loopholes that emerged after California’s initial effort to shut down the puppy mill pipeline. In 2019, California led the nation in banning pet stores from selling dogs from commercial breeders, but the law did not cover online marketplaces, and resellers cropped up to take the place of pet stores.
The recent laws known as the “Stop The Puppy Mill Pipeline” package were signed in response to a 2024 Los Angeles Times investigation that exposed how dogs from mass-breeding facilities were being funneled into California. The investigation found that misleading marketing tactics, predatory financial behaviors, and a gap in regulations allowed online brokers to take advantage of consumers and allowed puppy mills to continue to reach Californians.
The 2026 package consists of three bills signed by Governor Newsom in October 2025:
- AB 519 (Berman) — Prohibits both in-person and online pet brokers from selling dogs, cats, or rabbits under a year old. The bill defines a broker as a person or business that sells, processes, or transports a pet bred by someone else for profit. It carves out exceptions for shelters, rescues, and educational nonprofits teaching kids to care for animals. Service animals and those involved with government agencies, like police dogs, are also exempt.
- AB 506 (Bennett) — Voids contracts with non-refundable deposits — a common puppy mill tactic — and makes sellers liable if they fail to disclose the animal’s breeding and health information.
- SB 312 (Umberg) — Requires dog importers to send health certificates to the buyer and the California Department of Food and Agriculture no more than 10 days before the dog enters the state. The CDFA must keep these records for five years and make them publicly available.
After pet stores stopped being able to sell puppy mill dogs, some operators established nonprofit entities to continue selling animals in pet stores legally — until 2021’s Assembly Bill 2152, which narrowed the definition of an animal rescue nonprofit. The next move was to act as a third-party broker and sell through Californians purporting to be home breeders. The 2026 laws were designed specifically to close that remaining gap.
Commercial Breeder Licensing and Inspection Requirements in California
California does not issue a single statewide breeder license. Instead, licensing and permitting requirements are handled at the local level, and they vary considerably depending on where you operate.
California doesn’t issue a single statewide “breeder license.” Instead, requirements depend on your county and city. Most breeders need a kennel permit from their local animal control office. Some cities also require a business license if you breed more than one litter per year.
In Los Angeles County, for example, a dog breeding license is a specific type of animal facility license. A dog breeding license is an animal facility license issued to a person who breeds dogs commercially. A person applying for a dog breeding license must comply with all licensing requirements set forth in the applicable ordinance, all other applicable ordinances, and all federal and state laws, including California Health and Safety Code § 122045 et seq.
Facilities with larger numbers of animals face more frequent oversight. Facilities with 51 or more sexually intact dogs over the age of one year will be re-inspected more frequently, with the number of re-inspections per year determined by the number of dogs housed in the facility.
Regardless of jurisdiction, licensed commercial breeders in California are generally subject to the following requirements:
- The animal facility must provide a written medical program, approved by a California-licensed veterinarian, to prevent and control illness and parasitism. The program must include a regular de-worming schedule and a regular vaccination schedule against commonly transmitted canine diseases, and must be updated annually.
- The animal facility must maintain records on site demonstrating that an annual veterinary examination has been performed on each intact male or female dog over one year of age.
- Offspring may not be removed from the premises earlier than eight weeks of age except for medical reasons ordered by a California-licensed veterinarian. The order must be in writing, state the medical reason for early separation, and be provided to the department, if requested, up to two years after its issuance.
- Each pregnant dog must be housed separately at least three days before giving birth and be monitored at reasonable intervals. A dog who has just given birth must be provided with a contained nesting area and housed with her litter in their own run or enclosure until the newborns are weaned.
- In addition to records required by the Health and Safety Code, breeding facilities must keep records for all dogs including the date and from whom the dog was acquired, the date of each litter birthed by each female animal, veterinary records, and the cause of death and the method of disposal.
- Commercial pet breeders in California must also provide a floor mat, rest board, or another device that can be kept sanitary, and staff must wash their hands before and after handling any contagious or infectious animals.
Pro Tip: If you are a breeder and sell puppies online without in-person meetings, you may need a USDA license in addition to any local permits. Contact your county animal control office and the USDA APHIS regional office to confirm what applies to your specific operation.
If you are also interested in how California regulates other animals you might keep alongside dogs, the backyard pig laws in California and goat ownership laws in California pages cover those rules in detail.
Pet Store Sale Restrictions in California
California’s pet store restrictions are among the strictest in the nation. The foundation was laid in 2019, and the 2026 laws significantly expanded the scope of those restrictions.
AB 485, which went into effect in January 2019, prohibits pet store operators from selling animals unless they were obtained from a public animal control agency, shelter, or animal rescue group. This law does not prohibit someone from obtaining an animal directly from a breeder.
After that law passed, the law did not cover online marketplaces, and resellers cropped up to take the place of pet stores. Reports detailed truckloads of designer dogs, many of them abused and neglected, shipped into the state from commercial breeders in the Midwest. Consumers were advertised puppies from small, local breeders on online marketplaces and unwittingly ended up with sick puppies requiring expensive veterinary care.
AB 519, effective January 1, 2026, closed that gap. Many puppy mills pretend to be small home breeders by selling pets through brokers, so AB 519 prohibits third-party pet brokers, particularly online pet brokers, from selling cats, puppies, and rabbits bred by others for profit in California.
The consumer protection piece is equally important. AB 506 voids any pet contracts that include a nonrefundable deposit or fail to disclose the pet’s medical information and breeder origin. If a contract is voided, the purchaser is entitled to a refund and is not required to return the pet.
In terms of what is still permitted: direct sales from a breeder to a buyer remain legal, provided the breeder bred the animals themselves. You can still breed and sell your own puppies directly to buyers — you cannot buy puppies from other breeders and resell them online.
Common Mistake: Some sellers assume that listing a puppy as “California-bred” or advertising through a personal website exempts them from broker restrictions. Under AB 519, the defining factor is whether you personally bred the animal — not how or where you advertise it.
You can find related information about how California regulates other aspects of dog ownership, including dog bite laws in California and dog leash laws in California.
How to Report a Suspected Puppy Mill in California
If you believe a breeding facility near you is operating illegally or subjecting animals to cruel conditions, you have several reporting avenues available. Acting on credible suspicions is not just your right — it is an important part of how these laws get enforced.
Here is a breakdown of where to direct different types of concerns:
| Type of Concern | Where to Report |
|---|---|
| Animal cruelty or neglect at a local facility | Your local city or county animal control department or humane society |
| Suspected criminal conduct by a breeder | Your local District Attorney’s Office |
| Conditions at a federally licensed breeder or pet shop | Nearest USDA APHIS office |
| General puppy mill concerns | The Humane Society of the United States (online complaint form) |
| Deceptive pet sales or consumer fraud | California Attorney General’s Office or local DA |
If you are concerned about a possible puppy mill in your area, you can file a complaint with the Humane Society. If you suspect criminal conduct related to a puppy mill or breeder, file a complaint with your local District Attorney’s Office.
If you see or hear an animal that appears to be abused, mistreated, or neglected, speak with your local city or county animal control department or humane society. Staffers at the humane society can usually tell you if local police or sheriffs are likely to act on the problem. And even if the owner’s behavior is not against the law, the humane society may be able to do something to correct the problem.
If you are concerned about conditions at a puppy mill or pet shop, you can also contact the nearest office of the U.S. Department of Agriculture.
When making a report, document as much as you can beforehand: dates, addresses, photographs if safely obtainable, and descriptions of the conditions you observed. Detailed reports are more likely to prompt a formal investigation than general complaints.
For information on related reporting topics, see wildlife removal laws in California and emotional support animal laws in California.
Penalties for Puppy Mill Violations in California
California takes enforcement seriously, and the 2026 laws made the consequences for violations more significant than ever. Penalties depend on which law was violated and whether the offense involves civil, criminal, or administrative consequences.
Under the Polanco-Lockyer Pet Breeder Warranty Act (Health and Safety Code § 122045):
Any person violating any provision of the Act shall be subject to a civil penalty of up to $1,000 per violation. Any breeder who knowingly sells a diseased dog faces a civil penalty.
Under AB 519 (the pet broker ban, effective January 1, 2026):
Violating the broker ban carries serious consequences. First-time offenders face fines up to $5,000 per animal. Repeat violations can lead to criminal misdemeanor charges, jail time up to six months, and permanent bans from animal sales.
Under California Penal Code § 597 (animal cruelty):
California Penal Code § 597 PC prohibits animal abuse or cruelty, defined as maliciously killing, harming, maiming, or torturing a living animal. The crime can be charged as either a misdemeanor or a felony with a sentence of up to three years in jail or prison.
Multiple violations at a single inspection are treated separately. If animal control finds multiple violations during one inspection, each issue counts separately — three violations equals three fines.
Beyond fines and criminal charges, violators may also face:
- Revocation of their kennel or breeding license
- Seizure of animals from the facility
- Court-ordered remediation requirements
- Permanent prohibition from owning or selling animals
Important Note: Providing false information in breeder records is its own separate offense. Knowingly providing false information or records relating to any animal is a misdemeanor under California law.
Animal cruelty is more than an ethical concern — it is a serious crime under California law. The state’s animal protection statutes are among the strongest in the nation.
For more on California’s animal ownership rules and legal obligations, explore American Bully laws in California, pit bull laws in California, and German Shepherd laws in California. You may also find the United States laws on exotic pets page useful if you are researching broader animal ownership regulations.