• Quick Overview of Animal Rights

• Legal Overview of Animal Rights 
• Detailed Discussion of Animal Rights in the Legal System
• David S. Favre, Equitable Self-Ownership for Animals, 50 Duke L.J.473 (2000).
• Gary L. Francione, Animals as Property, 2 Animal L. I (1996).
• Steven J. Bartlett, Roots of Human Resistance to Animal Rights: Psychological and Conceptual Blocks, 8 Animal L. 143, 153-54, 163-71 (2002).
• Margit Livingston, Desecrating the Ark:  Animal Abuse and the Law's Role in Prevention, 87 Iowa L. Rev. 1-73 (2001)

A few organizations supporting animal welfare, animal rights:

• Humane Society of the United States
• People for the Ethical Treatment of Animals
• Animal Legal Defense Fund
• World Wildlife Fund

A few of a contrary view:

• Animal Rights Net
• Consumer Freedom
• Man in Nature

Teaching text book from Web Bookstore

Animals, Welfare, Interests and Rights by Prof. David Favre

Also see, Animal Rights, Current Debates and New Directions, edited by Cass Sunstein and Martha Nussbaum (Oxford University Press 2004)