I really don't see what the problem is, it makes perfect sense to me.
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"What do you mean by ‘animal rights’?"
People who support animal rights believe that animals are not ours to use for food, clothing, entertainment, experimentation, or any other purpose and that animals deserve consideration of their best interests regardless of whether they are cute, useful to humans, or endangered and regardless of whether any human cares about them at all (just as a mentally challenged human has rights even if he or she is not cute or useful and even if everyone dislikes him or her).
"What is the difference between ‘animal rights’ and ‘animal welfare’?"
Animal welfare theories accept that animals have interests but allow those interests to be traded away as long as the human benefits are thought to justify the sacrifice, while animal rights theories say that animals, like humans, have interests that cannot be sacrificed or traded away to benefit others. However, the animal rights movement does not hold that rights are absolute—an animal’s rights, just like those of humans, must be limited and can certainly conflict.
Supporters of the animal rights movement believe that animals are not ours to use for food, clothing, entertainment, or experimentation, while supporters of the animal welfare movement believe that animals can be used for those purposes as long as "humane" guidelines are followed.
"What rights should animals have?"
Animals should have the right to equal consideration of their interests. For instance, a dog most certainly has an interest in not having pain inflicted on him or her unnecessarily. We are, therefore, obliged to take that interest into consideration and to respect the dog’s right not to have pain unnecessarily inflicted upon him or her. However, animals don’t always have the same rights as humans because their interests are not always the same as ours, and some rights would be irrelevant to animals. For instance, a dog doesn’t have an interest in voting and, therefore, doesn’t have the right to vote because that right would be as meaningless to a dog as it is to a child.
"Where do you draw the line?"
The renowned humanitarian Albert Schweitzer, who accomplished so much for both humans and animals in his lifetime, would take time to stoop and move a worm from hot pavement to cool earth. Aware of the problems and responsibilities that an expanded ethic brings, he said, "A man is really ethical only when he obeys the constraint laid on him to aid all life which he is able to help .… He does not ask how far this or that life deserves sympathy … nor how far it is capable of feeling." We can’t stop all suffering, but that doesn’t mean that we shouldn’t stop any. In today’s world of virtually unlimited choices, there are plenty of kind, gentle ways for us to feed, clothe, entertain, and educate ourselves that do not involve killing animals.
"What about plants?"
There is currently no reason to believe that plants experience pain because they are devoid of central nervous systems, nerve endings, and brains. It is theorized that animals are able to feel pain so that they can use it for self-protection purposes. For example, if you touch something hot and feel pain, you will learn from the pain that you should not touch that item in the future. Since plants cannot move from place to place and do not need to learn to avoid certain things, this sensation would be superfluous. From a physiological standpoint, plants are completely different from mammals. Unlike animals’ body parts, many perennial plants, fruits, and vegetables can be harvested over and over again without dying.
If you are concerned about the impact of vegetable agriculture on the environment, you should know that a vegetarian diet is better for the environment than a meat-based one, since the vast majority of grains and legumes raised today are used as feed for cattle. Rather than eating animals, such as cows, who must consume 16 pounds of vegetation in order to convert them into 1 pound of flesh, you can save many more plants’ lives (and destroy less land) by eating vegetables directly.
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http://www.peta.org/about/faq.asp--------------------------------