People for the Ethical Treatment of Animals (PETA)
All For Animals (AFA)
National Anti-Vivisection Society (NAVS)
Stop Animal Testing Petition
American Society for the Prevention of Cruelty to Animals(ASPCA)
Letters for Lives (plz visit...awesome organization! and new too!)
Stop Animal Tests
John Hopkins Center for Alternatives to Animal Testing (CAAT)
Anti-Vivisection Quotes

Check em out! :) If you would like your organization/website added, E-Mail Us