General feral cat/TNR resources
- Neighborhood Cats (New York City)
- IndyFeral (Indiana)
- Best Friends Animal Society
- Alley Cat Allies
- Feral Cat Caretakers' Coalition
- Feral Cats in the News blog
- Humane Society of the United States
Local TNR groups
- Cats R Us (Annapolis, MD)
- Feline Rescue Association (Randallstown, MD)
- Metro Ferals (Arlington, VA)
- Prince Georges Feral Friends (Prince Georges County)
Baltimore's TNR ordinance
- Baltimore City Health Department -- Trap Neuter Return Program (Feb. 2009)
- Explanation of caretaker requirements under the law
Other Baltimore resources
- Alley Cat Allies' "Every City Every Kitty" campaign information for Baltimore
- Feline Rescue Association
- Baltimore City Department of Health -- Animal Protection and Safety
- Maryland SPCA
- BARCS (Baltimore Animal Rescue and Care Shelter)