Chimpanzee

The genus Pan is part of the subfamily Homininae, to which humans also belong. These two species are the closest living evolutionary relatives to humans, sharing a common ancestor with humans about four to six million years ago.[3] Research by Mary-Claire King in 1973 found 99% identical DNA between human beings and chimpanzees,[4] although research since has modified that finding to about 94%[5] commonality, with some of the difference occurring in noncoding DNA. P. troglodytes and P. paniscus have been proposed to belong with H. sapiens in the genus Homo, rather than in Pan; e.g., by J. Diamond in his book, wherein he refers to man as The Third Chimpanzee. Among the arguments in favor of this reclassification is that other species have been reclassified to belong to the same genus because of less genetic similarity than that between humans and chimpanzees.