Folks are crossing animal and human genes to produce chimeras now. The goal is twofold. One; to develop stem cells for human organs without the illegal practice of stem cell harvesting in humans. Two; to monitor human development without dissecting people on the streets. From those perspectives, it seems like a good thing. Our history in human dissection is pretty gory, as you may be aware. On the other hand, you can kind of see the whole “X-Men” story coming to fruition inside a remote lab in Shanghai. If you were crossed with an animal prior to your sentience, what would you like it to have been?
Link: National Geographic