Pennsylvania

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Animal Coalition of Delaware County
Newtown Square
Affordable Spay/Neuter Clinic
Pottstown
Alleghany Spay and Neuter Clinic
Clearfield
Animal Care Sanctuary
East Smithfield
Animal Friends
Pittsburgh
Animal Rescue Inc.
New Freedom
Animal Rescue League Shelter and Wildlife Center
Pittsburgh
Animals Can't Talk Rescue and Adoption
East Stroughsburg
Because You Care
McKean
Beckoning Cat Project
Lewisburg
Bradford County Humane Society
Ulster
Castaway Critters
Harrisburg
CATS Bridge to the Rescue
Trevose
Central PA Animal Alliance
Mechanicsburg
Centre County Paws
State College
Chester County SPCA
West Chester
City Kitties
West Philadelphia
Clarion PAWS
Clarion
Delaware County SPCA
Media
Dr. Dina Russell
Chalfont
Eastern Pennsylvania Animal Alliance
Multiple locations
Fix 'Ur Cat
Washington County
Fluffyjean Fund for Felines
Washington County
Forgotten Cats
Willow Grove
Forgotten Felines & Fidos
Germansville
Frankie's Friends Cat Rescue
Tarentum
Friends of Homeless Felines
Scottdale
Furry Friends Network
Central Pennsylvania
Green Street Rescue
Philadelphia
Happy Hearts & Tails
Northeastern PA
Helen O. Krause Animal Foundation
Mechanicsburg
Homeless Cat Management Team
Pittsburgh
Humane League of Lancaster County
Lancaster
Humane Society of Butler County
Butler
Humane Society of Harrisburg Area
Harrisburg
Humane Society of Westmoreland County
Greensburg
In Care of Cats, Inc.
Elizabeth
In Pursuit of Grace
Scranton
Itty Bitty Kitty Inc.
Allentown
Kitz & Katz Animal Foundation
Hanover & Littleton
Lehigh County Humane Society
Allentown
Monroe County Friends of Animals
Stroudsburg
No Nonsense Neutering
Multiple locations
Northeast Animal Rescue
Philadelphia
Paws of PA
Multiple locations
Peaceable Kingdom
Whitehall
Pennsylvania SPCA
Danville
Philadelphia Community Cat Council
Philadelphia
Project Meow
Philadelphia
Purrfect Paws Rescue
Wynnewood
Spay and Neuter Indiana Pennsylvania Pets (SNIPP)
Indiana
Spay Neuter Assistance Program
Central Pennsylvania
Steelton Borough Community Cats
Steelton
Stray Cat Blues
Colmar
The Center for Animal Health & Welfare
Easton
The Hundred Cat Foundation
Centre County
The Nobody's Cat Foundation
Central PA
The Pet Pantry of Lancaster County
Lancaster
The Spayed Club
Frazer
Wags Rescue & Referral 
Southampton 
Western Pennsylvania Humane Society
Pittsburgh
York County SPCA
York