Animal Shelters / Rescue Organizations / Humane Organizations
- Alley Cat Allies | https://www.alleycat.org
- American Humane | https://www.americanhumane.org/
- Animal Rescue Site | https://theanimalrescuesite.com
- Best Friend Animal Sanctuary | https://www.bestfriends.org/
- Humane Society of the United States | http://www.hsus.org
- Massachusetts Animal Coalition | https://www.massanimalcoalition.org/
- New England Federation of Humane Societies | https://www.newenglandfed.org/
Cat Health & Behavior
- The Cornell Feline Health Center | https://www.vet.cornell.edu/fhc/
- The Pet Web Library | https://www.marvistavet.com/html/body
Lost & Found Pets Information
- Missing Animal Response Network | https://www.missinganimalresponse.com/
Pet Search Engines
- Adopt-A-Pet.com | https://www.adoptapet.com/
- Petfinder.com | https://www.petfinder.com/