Editing Pan (genus) (section)

==Longevity==
In the wild, chimpanzees live to their 30s,<ref>{{Cite journal |doi=10.1073/pnas.1612191113 |pmid=27872299 |pmc=5137748 |title=The emergence of longevous populations |journal=[[Proceedings of the National Academy of Sciences]] |volume=113 |issue=48 |pages=E7681–E7690 |year=2016 |last1=Colchero |first1=F. |last2=Rau |first2=R. |last3=Jones |first3=O. R. |display-authors=3 |last4=Barthold |first4=Julia A. |last5=Conde |first5=Dalia A. |last6=Lenart |first6=Adam |last7=Nemeth |first7=Laszlo |last8=Scheuerlein |first8=Alexander |last9=Schoeley |first9=Jonas |last10=Torres |first10=Catalina |last11=Zarulli |first11=Virginia |last12=Altmann |first12=Jeanne |last13=Brockman |first13=Diane K. |last14=Bronikowski |first14=Anne M. |last15=Fedigan |first15=Linda M. |last16=Pusey |first16=Anne E. |last17=Stoinski |first17=Tara S. |last18=Strier |first18=Karen B. |last19=Baudisch |first19=Annette |last20=Alberts |first20=Susan C. |last21=Vaupel |first21=James W.|bibcode=2016PNAS..113E7681C |doi-access=free }}</ref><ref>{{cite journal |doi=10.1002/1098-2361(2000)19:2<111::AID-ZOO2>3.0.CO;2-5 |title=Advanced age influences chimpanzee behavior in small social groups |journal=Zoo Biology |volume=19 |issue=2 |pages=111–119 |year=2000 |last1=Baker |first1=K. C. |url=http://www.chimpcare.org/assets/forums/4_ftp.pdf |citeseerx=10.1.1.694.6985}}</ref> while some captured chimps have reached an age of [[Oldest apes|70 years and older]].<ref>{{cite web |url=https://edition.cnn.com/2012/04/21/us/oldest-chimpanzee-in-captivity/ |title=Meet one of the oldest chimpanzees in captivity |first=K. |last=Segal |website=CNN |date=April 21, 2012 |access-date=October 7, 2017}}</ref>

===Muscle strength===
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Chimpanzees{{dubious|Chimp or genus Pan, incl. bonobo? Question valid for entire paragraph.|date=August 2016}} are known for possessing great amount of muscle strength, especially in their arms. However, compared to humans the amount of strength reported in media and popular science is greatly exaggerated with numbers of four to eight times the muscle strength of a human. These numbers stem from two studies in 1923 and 1926 by a biologist named John Bauman.<ref>{{cite journal |year=1923 |jstor=6455 |title=The strength of the chimpanzee and orang |author=Bauman, J. E. |journal=The Scientific Monthly |volume=16 |issue=4 |pages=432–439 |bibcode=1923SciMo..16..432B}}</ref><ref>{{cite journal |jstor=1373587 |title=Observations on the strength of the chimpanzee and its implications |doi=10.2307/1373587 |volume=7 |pages=1–9 |author=Bauman, J. E. |journal=Journal of Mammalogy |issue=1 |year=1926}}</ref> These studies were refuted in 1943 and an adult male chimpanzee was found to pull about the same weight as an adult man.<ref>{{cite journal |jstor=1374806 |title=The bodily strength of chimpanzees |volume=24 |pages=224–228 |author=Finch, G. |journal=Journal of Mammalogy |issue=2 |year=1943 |doi=10.2307/1374806 }}</ref> Corrected for their smaller body sizes, chimpanzees were found to be stronger than humans but not anywhere near four to eight times. In the 1960s these tests were repeated and chimpanzees were found to have twice the strength of a human when it came to pulling weights. The reason for the higher strength seen in chimpanzees compared to humans are thought to come from longer skeletal muscle fibers that can generate twice the work output over a wider range of motion compared to skeletal muscle fibers in humans.