Nick Sibilla wonders:
Depending on the level of rationality, intelligence, and pain sensitivity an animal has, the more rights it should have. Under this ethical framework, a whale or a dolphin would more or less be the moral equivalent of a young child, the mentally handicapped, and possibly a fetus, depending on the latter's stage of development. Cetacean rights and fetal personhood advocates could become unlikely allies in the years ahead.
(Photo by Flickr user makelessnoise)
