Because, ALL living beings have the Right to Life and Love.
earth-ling - "One who inhabits the earth"
EARTHLINGS is a 2005 American documentary film about humankind's total dependence on animals for economic purposes. Presented in five chapters (pets, food, clothing, entertainment and scientific research) the film is narrated by Joaquin Phoenix, featuring music by Moby, and was written, produced and directed by Shaun Monson.
video source: youtube/vegan wolf