Rights come with the responsibility to not violate the rights of others. And most animals simply cannot comprehend that. I'm not sure if chimps or other primates do or not (I've seen conflicting data), but something like a tapeworm, tsi-tsi fly, or floraplatihelmenties certainly doesn't grasp the concept. If those can harm--and even kill!--humans, why should I feel bad about harming or killing them? Simply put, I see no reason to show another organism more respect than it shows me.
As far as torturing animals goes, it's certainly not good to torture an animal merely for the sake of torturing it--pain for the sake of pain is never good in a non-concentual situation (we'll leave aside adult concentual situations; that's another issue). That said, there's often important information to be gained through such experiments. I think they need to be judged on a case-by-case basis. And no, harming a rabbit does NOT equate to harming a human in my mind, for the reasons outlined above.
As far as torturing animals goes, it's certainly not good to torture an animal merely for the sake of torturing it--pain for the sake of pain is never good in a non-concentual situation (we'll leave aside adult concentual situations; that's another issue). That said, there's often important information to be gained through such experiments. I think they need to be judged on a case-by-case basis. And no, harming a rabbit does NOT equate to harming a human in my mind, for the reasons outlined above.
