One-on-one encounters between females are generally rare, giving researchers few opportunities to observe signs that would clue them in to each chimpanzee’s relative rank. Unlike the more gregarious males, female chimpanzees tend to be loners, spending much time by themselves or with their own children. “We found that, after entering the adult hierarchy, there was a complete absence of successful challenges for rank increases among females,” said Steffen Foerster, senior research scientist at Duke University and lead author on the study. 14 in the journal Scientific Reports, provides the first detailed look at how social status among wild chimpanzees changes throughout their lifetimes. While males actively challenge their superiors to win higher rank, females accept their position in the social pecking order, waiting until more senior group members die before moving up the ladder.
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High-ranking chimpanzees of both sexes usually have better access to food and mates, boosting chances of survival for themselves and their offspring.īut male and female chimpanzees achieve social status in dramatically different ways, says a new study by primatologists at Duke University. We have no indication of what provoked this behavior at all.For wild chimpanzees, social status is more than just a matter of pride. "He rides in a car every day, he opens doors, he's a very unique animal in that aspect. "He's been raised almost like a child by this family," Conklin said Monday.
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When he was younger, Travis appeared on TV commercials for Old Navy and Coca-Cola, made an appearance on the "Maury Povich Show" and took part in a television pilot, according to a 2003 story in The Advocate newspaper of Stamford. He also brushed his teeth using a Water Pik, logged onto the computer to look at pictures, and watched television using the remote control, police said. Officers used cookies, macadamia treats and ice cream in an attempt to lure him, but subdued him only after he became too tired to resist.Īt the time of the 2003 incident, police said the Herolds told them the chimpanzee was toilet trained, dressed himself, took his own bath, ate at the table and drank wine from a stemmed glass. Police have dealt with him in the past, including an incident in 2003 when he escaped from his owners' vehicle in downtown Stamford for two hours.
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The chimpanzee was well-known around Stamford because he rode around in trucks belonging to the towing company operated by his owners. Herold and two officers also received minor injuries, police said.Ī message seeking comment was left Monday night at Herold's home. The wounded chimpanzee fled the scene, but Conklin said police were able to follow the trail of his blood: down the driveway, into the open door of the home, through the house and to his living quarters, where he had retreated and died of his wounds. That officer shot the chimpanzee several times, Conklin said. Travis knocked the mirror off a cruiser before opening its door and starting to get in, trapping the officer. After the initial attack, Travis ran away and started roaming Herold's property until police arrived, setting up security so medics could reach the critically injured woman, Conklin said.īut the chimpanzee returned and went after several of the officers, who retreated into their cars, Conklin said.