These organizations are some of the bigger, national, and well-known animal rescues/shelters in the LA area:

• ASPCA | https://www.aspca.org/los-angeles-initiative
• Best Friends Animal Society | https://bestfriends.org/los-angeles
• Pasadena Humane | https://pasadenahumane.org/
• Lange Foundation | https://langefoundation.org/
• Much Love Animal Rescue | https://www.muchlove.org/ - Organization I have fostered with the past
• Voice For The Animals Foundation | https://www.vftafoundation.org/ - Organization I have fostered with the past
• Santé D’Or Foundation | http://www.santedor.org/
• All city shelters - Pretty much all the cats/kittens that the above organizations receive come from shelters. They always need help! Plus, city shelters tend to have the lowest adoption fees.
• Los Angeles Animal Services | https://www.laanimalservices.com/ - Shelters throughout LA city
• Los Angeles County Animal Care | https://animalcare.lacounty.gov/ - Shelters throughout LA county
• Santa Monica Animal Shelter | https://www.santamonica.gov/places/city-facilities/santa-monica-animal-shelter
• Burbank Animal Shelter | https://www.burbankca.gov/web/parks-recreation/burbank-animal-shelter-homepage

Cat/Kitten Rescue Organizations

• Black Cat Holistic Rescue | https://www.blackcatholisticrescue.org/
• Baby Kitten Rescue | https://www.babykittenrescue.com/
• CAAT Friends Home | https://caatfriends.org/
• Carson Cats Rescue | https://www.carsoncats.com/
• Cat Connection LA | http://catconnectionla.org/
• CATS, Inc. | https://catsatthestudios.com/
• Feral Cat Caretakers' Coalition | https://feralcatcaretakers.org/
• Heaven on Earth | https://heavenlypets.org/
• Helen Sanders CatPAWS | https://helensanderscatpaws.com/
• Felines and Friends | https://felinesandfriends.org/index.php
• FixNation | https://fixnation.org/
• Kitt Crusaders | https://kittcrusaders.org/
• Kitten Rescue | https://kittenrescue.org/
• Kitty Bungalow-Charm School for Wayward Cats | https://www.kittybungalow.org/ 
• Kitty of Angels | https://kittyofangels.org
• Krazy for Kats | https://www.krazyforkats.org/
• Luxe Paws | https://savekittensla.org/ 
• Milo's Sanctuary | https://www.milossanctuary.org/
• National Cat Protection Society | https://www.natcat.org/
• PURRfect Partners 4 Cats | https://purrfectpartners4cats.com/
• Rory to the Rescue | https://rorytotherescue.org/
• ​Save A Kitty | https://www.saveakittyca.org/
• Stray Cat Alliance | https://straycatalliance.org/
• Stray Paws Animal Haven | https://www.straypawsanimalhaven.org/
• Surfcat Rescue | https://surfcatcafe.org/
• The Cat Cove | https://www.thecatcove.com/
• The Cat Posse | https://www.catposse.org/
• The Cat's Meow | https://thecatsmeowanimalrescue.org/
• The Happy Kitty Rescue | https://www.thehappykitty.org/
• Valley Cats | https://valleycatsinc.org/

Cat Cafes/Lounges

• Tail Town Cat Cafe | https://tailtowncats.com/
• CatCafe Lounge | https://www.catcafelounge.com/
• Feline Good Social Club | https://www.felinegoodsocialclub.com/
• Crumbs & Whiskers | https://crumbsandwhiskers.com/

If you know of any other organizations that were missed or would like to add/delete your organization, please let us know.