Here's an article from the Chronicle of Higher Education that discusses animal law, a field that is growing. (Note that you will need a password to read the full text of the article). This article focuses in particular on Lewis & Clark College School of Law, whose animal law program is well known. I was particularly interested to read this article because a student in my Advanced Legal Research course last semester wrote a very good research guide on farm animals, who tend to be ignored in both federal and state statutes. The topic made for an interesting research guide. Because there is a dearth of primary sources, the student had to go beyond even secondary legal sources and look at public-policy materials, sometimes from other countries.