Maryland

Anne Arundel County​:
Cats R Us - Annapolis
Rude Ranch Animal Rescue Center - Harwood
SAVECats - Anne Arundel County
SPCA of Anne Arundel County - Annapolis
Spay Spa and Neuter Nook - Davidsonville

Baltimore County:
Animal Rescue, Inc. - Maryland Line
Baltimore Animal Rescue & Care Shelter - Baltimore
Baltimore Feral Cat Caretakers Outreach - Baltimore
Baltimore Humane Society - Reisterstown
Cat Rescue of Maryland - Baltimore
Community Cats Maryland - Baltimore
Lucky Cat Rescue, Inc. - Baltimore 
Maryland SCPA - Baltimore
The Feline Rescue Association - Stevenson

Calvert County:
Friends of Felines - Calvert County

Cecil County:
Chesapeake Feline Association - Cecil County

Charles County:
Last Chance Animal Rescue - Waldorf
Throwaways Rescue Foundation, Ltd. - Waldorf

DC Metro Area:
Metro Ferals - Alexandria/DC Metro
National Capital Area Spay & Neuter Center - Washington, DC

Frederick County:
Animal Welfare League of Frederick County - Frederick
Frederick County Humane Society - Frederick
Pets-4-Pets - Frederick 

Howard County:
Animal Welfare Society of Howard County - Columbia
Howard County Cat Club - Columbia
Pampered Paws Rescue, Inc. - Ellicott City
Small Miracles - Ellicott City

Garrett County:
HART for Animals - Oakland

Montgomery County:
All Cat Rescue - Gaithersburg
MCPAW - Derwood
Montgomery County SCPA - Rockville
Puden's Place - Silver Spring
Rock Creek Cats - Garrett Park
Shingilana Rescued Felines - Germantown 

Prince George's County:
Alley Cat Rescue, Inc. - Mt. Rainier
Laurel Cats - Laurel
Partnership for Animal Welfare (PAW) - Greenbelt
Prince Georges Feral Friends - Bowie

Somerset County:
Humane Society of Somerset County - Westover

St. Mary's County:
Feral Cat Rescue of St. Mary's County - Great Mills
St. Mary's Animal Welfare League - Mechanicsville

Tablot County:
Talbot Humane - Easton
Tomcat Solutions - Easton

Queen's Ann County:
Spay Now Animal Surgery Clinic - Grasonville

Wicomico County:
The Good Shepherd Cat Sanctuary - Delmar

Worcester County:
Community Cats Coalition - Berlin
Delmarva Cat Connection - Ocean City