Breeders in Maryland
139 USDA-licensed facilities
Maryland is home to 139 USDA-licensed animal facilities, including commercial breeders, dealers, exhibitors, and research institutions operating under federal Animal Welfare Act oversight. Each facility listed below has been inspected by USDA APHIS veterinary medical officers, and their complete inspection histories are available for public review.
The compliance grades shown range from A+ (excellent — few or no violations) to F (failing — extensive or critical violations). These grades are calculated by BreederCheck based on the number, severity, and recency of documented violations. A high violation count does not always indicate current problems — some facilities have improved significantly after being cited — but it does tell you where to look more carefully and what questions to ask before purchasing an animal.
| Grade | Facility | City | Inspections | Violations | Last Inspected |
|---|---|---|---|---|---|
| A+ | Party Animals, LLC | Sudlersville | 7 | 0 | Sep 23, 2025 |
| A+ | PATSY MCKENZIE | OAKLAND | 1 | 0 | Apr 3, 2014 |
| C | PLUMPTON PARK ZOOLOGICAL GARDENS INC | RISING SUN | 4 | 4 | Dec 11, 2014 |
| C+ | PLUMPTON PARK ZOOLOGICAL GARDENS INC | RISING SUN | 22 | 7 | Aug 27, 2025 |
| A+ | POSITIVE DOG TRAINING AND ANIMAL ACTORS L L C | SILVER SPRING | 7 | 3 | Mar 15, 2019 |
| A+ | Bioqual, Inc | ROCKVILLE | 1 | 0 | Jul 15, 2025 |
| A+ | QUANTEM AVIATION SERVICES LLC | BALTIMORE | 14 | 0 | Oct 28, 2021 |
| A+ | RACHEL LINDERMAN | STREET | 4 | 0 | Oct 7, 2019 |
| A+ | RACHEL PHELPS | GLEN BURNIE | 6 | 1 | May 19, 2021 |
| F | Salisbury Zoological Park | Salisbury | 17 | 9 | Jan 8, 2026 |
| A+ | SAMANTHA VALLE | MOUNT AIRY | 8 | 3 | Jun 24, 2021 |
| F | Samantha Valle | Point of Rocks | 9 | 7 | Feb 21, 2025 |
| A+ | SERENITY FARM INC | BENEDICT | 5 | 0 | Jun 18, 2018 |
| A+ | Serenity Farm Inc | Benedict | 7 | 1 | Mar 12, 2025 |
| B+ | SHANKS EXOTIC INC | HAGERSTOWN | 13 | 3 | Jan 20, 2026 |
| F | DIANE M MIELKE SIDNEY N MIELKE | DENTON | 10 | 25 | Jun 30, 2022 |
| A+ | SIGMOVIR BIOSYSTEMS INC | ROCKVILLE | 13 | 0 | Dec 16, 2025 |
| A+ | SIGMOVOR BIOSYSTEMS INC | ROCKVILLE | 12 | 0 | Dec 16, 2025 |
| A+ | SINAI HOSPITAL OF BALTIMORE | BALTIMORE | 4 | 1 | Jun 20, 2017 |
| A+ | SMITHERS AVANZA TOXICOLOGY SERVICES LLC | GAITHERSBURG | 6 | 0 | Nov 28, 2018 |
| A+ | SMITHERS AVANZA TOXICOLOGY SERVICES LLC | GAITHERSBURG | 6 | 0 | Nov 28, 2018 |
| A+ | SOBRAN INC | BALTIMORE | 9 | 1 | Jul 24, 2019 |
| A+ | SPRING VALLEY LABORATORIES INC | SYKESVILLE | 2 | 0 | Jul 28, 2015 |
| A+ | SPRING VALLEY LABORATRORIES, INC. | SYKESVILLE | 2 | 2 | Jul 28, 2015 |
| A+ | SQUEALS ON WHEELS EVENTS LLC | POTOMAC | 5 | 1 | Apr 28, 2021 |
| A+ | IRVING MC CONNELL | SILVER SPRING | 4 | 1 | Dec 15, 2016 |
| D | THOMAS D. MORRIS INC | UPPERCO | 18 | 8 | Dec 23, 2025 |
| F | THOMAS D. MORRIS, INC | REISTERSTOWN | 16 | 10 | Apr 3, 2025 |
| B+ | Tiffany Mielke Diane Mielke | Denton | 8 | 4 | Jan 7, 2026 |
| A+ | Tonix R&D Center, LLC | Frederick | 4 | 0 | Feb 13, 2025 |
Understanding Breeder Licensing in Maryland
Federal licensing through the USDA is required for any breeder who sells animals wholesale, maintains more than a threshold number of breeding females, or sells animals sight-unseen over the internet or by mail. Breeders who sell directly to buyers from their own premises, and who maintain four or fewer breeding females, are generally exempt from federal licensing under the retail pet store exemption — although this exemption was narrowed significantly in 2013.
In addition to federal requirements, Maryland may impose its own state-level breeder regulations. These can include state licensing requirements, limits on the number of intact breeding animals, mandatory spay/neuter provisions for sold animals, lemon laws that guarantee buyer recourse for undisclosed health problems, and required veterinary health certificates at the time of sale. State laws vary enormously — some states have comprehensive breeder protection statutes while others have virtually no state-level oversight beyond what the USDA provides.
The facilities shown on this page are those with active or recently expired federal USDA licenses in Maryland. Breeders operating below the federal threshold or selling only within the state may not appear in this database. If you are buying a pet from any breeder in Maryland, we recommend checking both federal records here and any applicable state licensing databases.
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