(Associated Press) JOHANNESBURG – In the six years he’s managed a sanctuary for abused and orphaned chimpanzees, South African conservationist Eugene Cussons is from time to time called on to comment when an ape elsewhere in the world attacks a human. Cussons says he could always pinpoint a moment of taunting or perceived aggression that could have set off the quick and powerful animals.

This time, though, the attack was at his own Jane Goodall Institute Chimpanzee Eden in eastern South Africa. And Cussons, host of the Animal Planet show “Escape to Chimp Eden,” is without an explanation.

In telephone interview Saturday, Cussons said he would have to wait until the severely injured victim, a University of Texas at San Antonio anthropology graduate student who was inspired by famed primatologist Jane Goodall to study chimps, was well enough to provide details on what sparked Thursday’s attack.

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