# we may be able to construct an entire functioning nonhuman human from pieces of other species > Pigs don't get shot at because our culture reviles them as filthy and disgusting. Pigs get shot at because their organs are a lot like ours. The heart of the pig is a particularly close match. Goats were another favorite, because their lungs are like ours. I was told this by Commander Marlene DeMaio, who studies body armor at the Armed Forces Institute of Pathology (AFIP). Talking to DeMaio, I got the impression that it would be possible to construct an entire functioning nonhuman human from pieces of other species. "The human knee most resembles the brown bear's," she said at one point, following up with a surprising or not so surprising statement: "The human brain most resembles that of Jersey cows at about six months." [1] I learned elsewhere that emu hips are dead ringers for human hips, a situation that has worked out better for humans than for emus, who, over at Iowa State University, have been lamed in a manner that mimics osteonecrosis and then shuttled in and out of CT scanners by researchers seeking to understand the disease [[Stiff by Mary Roach#^m2evc]] [[a Mongolian gerbil has an ear structure like humans]]