Dog Fighting How-To on amazon.com?

I recently learned that Amazon.com sells books on dogfighting. One title in particular is getting a lot of attention: The Dog Pit—Or, How To Select, Breed, Train And Manage Fighting Dogs, With Points As To Their Care In Health And Disease.

This surprised me as a regular reader of Bark Magazine, I recently read an article on Amazon and their 'dog friendly' workplace policies. There has been much online discussion and debate regarding their choice to sell these types of books (there are also similar titles on cock fighting). One group, People against Cruelty to Animals has started a petition to submit to Amazon to describe their position. Below is a link to the petition for anyone who is interested in signing.

Tell Amazon to Stop Selling Dog Fighting Material