London's Science Museum has this plaster model, supposedly depicting the head of an executed Chinese Yangstze river pirate, in its collection. But what was the purpose behind creating the model, which depicts the blood vessels, trachea, esophagus, and severed spine? The pictures below are rather gruesomely detailed.
Investigators in Chicago are working to determine if a "potentially legitimate" shipment of severed human heads is, in fact, legitimate.
Ready for some service? Here's a patent, awarded in 1985, describing a system for "perfusing an animal head." Creepily, the head shown in the diagram is not an animal's. Wait what's that? You want to see it in action? Welp...