Wow, good question! Chimpanzees are 98% human, if you consider them to be so different from us. read more
Humans and chimps have lots of genetic differences, 5% of DNA is not that close to be considered one species, so much that humans are not even in the same genus. So humans and chimps are two really distict species. read more
However, all humans can produce fertile children and so we are all the same species. Chimpanzees, on the other hand, are actually two species: pan troglodytes, the common chimpanzee, and pan paniscus, the gracile chimpanzee or bonobo. These two types of chimpanzee are completely separate species. Humans and both chimpanzee species evolved from a common ancestor, possibly sahelanthropus tchadensis, between five and seven million years ago. Only fossils of this ancestor remain. read more