![]() The finely tuned motor system in humans gives us the ability to do things like make complex tools, throw accurately, and manipulate small objects. ![]() This matter contains large numbers of nerve cells that connect to muscle fibers and regulate muscle movement. Relative to body mass, chimpanzees have less grey matter in their spinal cords than humans have. PHOTOS: How Santino the Chimp Attacks Visitors Paleoanthropologist Alan Walker of Penn State University thinks that even if a human and a chimp were somehow evenly matched in size, chimpanzees wind up using all of their muscle strength, whereas humans tend to hold back. If you go to a zoo and look at chimps, it takes your breath away because they are so big and strong." "We work with rhesus macaques, which are much smaller than chimpanzees, and even they require strict precautions. "You have to be reactive and extremely careful around them," she told Discovery News. Jenny Short, assistant director of colony management and research services at the California National Primate Research Center, reminded that chimpanzees and other primates are not domesticated animals. Attackers use their canines to bite and tear at the victim, so that any body parts that stick out, such as testes and ears, are often ripped off during an attack." "In the case of an adult victim, the attacking males take turns beating and jumping on the victim. ![]() "Such attacks can be severe and fatal," she said. Sylvia Amsler, a lecturer in the Anthropology Program at the University of Arkansas at Little Rock, told Discovery News that male chimps in the wild commonly engage in war-like behavior to defend or acquire territory. A male chimpanzee grabbed Oberle and pulled him under one of the fences, which was electrified.Īside from that dangerous misstep, the fact that the attackers were male is not surprising to those who study chimpanzees. NEWS: Zoo Chimp Makes Elaborate Plots to Attack HumansĮugene Cussons, managing director of the sanctuary and host of the Animal Planet show Escape to Chimp Eden, said Oberle received training prior to the incident, but broke the rules when he went through two fences separating the primates from humans. ![]()
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