Alley Cat Allies
Alley Cat Allies, is a national nonprofit clearinghouse for information on feral and stray cats. For more than a decade Alley Cat Allies has advocated Trap-Neuter-Return (TNR) - the most humane and effective method to reduce feral cat populations.

Fix our Ferals
A Berkeley nonprofit that spays and neuters feral cats -- domestic cats who were abandoned, lost, or born in the wild.

Tri-Valley Fix our Ferals