While this does not relate to deaf animals, I feel this is important to share as it concerns the health of animals and humans as well as the environment. There's a wonderful vlog for American Sign Language (ASL) users by Raychelle. The English version you will see on the link below is an addition to the ASL vlog. She discusses about the pros and cons of the four natural cat litter: Feline Pine, Swheat Scoop, Yesterday's News and World's Best Cat Litter. I hope that by watching the vlog, this motivates the non ASL users to learn the beautiful language in its own right.