I subscribe www.care2.com and they provide a wonderful resource, ranging from domestic animals/wild animals to environment to violence against women and so on. They send a petition from time to time on various issues to sign. I encourage you all to subscribe and give your support. I stumbled across this article that talks about deaf pets as well as someone mentioned about it to me. Overall, I agree with most of, if not all, what is being said in the article on deaf pets.
Go to Pets with Disabilities Series: Deaf Pets made available by www.care2.com or go to Pets with Disabilites Series: Deaf Pets made available by www.petside.com