A petition has been started to have the game blocked. Visit this link to add your name to the petition: http://www.change.org/petitions/tell-android-to-block-dog-fighting-app
Dogster's blog, http://dogblog.dogster.com has a great article if you would like more information.
Obviously, the game's promotors are defending their creative genius. Comparing it to such favourites as Crazy Birds. I'm not sure, but where is the likeness between a game that glorifies a "sport" which in real life results in prison time and cartoon birds plummeting to their death?