QUOTE : Those who emphasize animal rights have a more complicated task. They tend to urge that animals should be given rights to the extent that their capacities are akin to those of human beings. The usual emphasis here is on cognitive capacities. The line would be drawn between animals with advanced capacities, such as chimpanzees and dolphins, and those that lack such capacities. Undoubtedly a great deal of work needs to be done on this topic. But at least an emphasis on the capacity to think, and to form plans, seems to provide a foundation for appropriate line drawing by those who believe in animal rights in a strong sense.