Infant rats are being decapitated and their heads grafted onto the thighs of adults by researchers in Japan. (via A Foodie By Nature).

If kept cool while the blood flow is stopped, a transplanted brain can develop as normal for at least three weeks, and the mouth of the head will move, as if it is trying to drink milk, the team reports....The grafted heads could be "excellent models" for investigating brain function in human babies after periods of no blood flow.

With all this tatooage and piercage, I foresee something along these lines as the next fashion statement. Among humans, I mean.