Wowza, this is crazy neato. "Animal-Human Hybrids Spark Controversy" describes the work of scientists in Shanghai who created human-rabbit embryos. This raises all sorts of interesting questions... should these things be considered people or house pets? Do they have rights? How will they fit into society?

Scientists have begun blurring the line between human and animal by producing chimeras - a hybrid creature that's part human, part animal.

Chinese scientists at the Shanghai Second Medical University in 2003 successfully fused human cells with rabbit eggs. The embryos were reportedly the first human-animal chimeras successfully created. They were allowed to develop for several days in a laboratory dish before the scientists destroyed the embryos to harvest their stem cells.

...

Irv Weissman, director of Stanford University's Institute of Cancer/Stem Cell Biology and Medicine in California, has already created mice with brains that are about one percent human. Later this year he may conduct another experiment where the mice have 100 percent human brains. This would be done, he said, by injecting human neurons into the brains of embryonic mice.