I heard about that. Now we're into killing for art and science (not for long I hope - hard to take, and could go on forever.) Long ago there was a story about a university study where they put long eared and short eared bunnies in ovens to see which would die faster. There's also a famous very old story about an experimenter operating on a dog, strapped down without sedation, which dog licked the scientist's hand. (If memory serves, that story was reported by Darwin, as before his time, but it rings eternal.)