Orangutans share at least 28 physical traits with humans; that’s 26 more than chimps and 21 more than gorillas. Inside our mouths, we’ve both got flat molars that are covered with a thick layer of enamel. And, according to researcher Schwartz, “A hole in the roof of the mouth that was supposedly unique to humans is also present in orangs.”
Disclaimer: Orangutans have a very close evolutionary connection to humans. Here’s a clear breakdown: Genetic similarity: Humans share about 97% of our DNA with orangutans, making them one of our closest living relatives (after chimpanzees and bonobos). Evolutionary connection: Orangutans, humans, gorillas, and chimpanzees all belong to the Hominidae family—the “great apes.” Humans and orangutans share a common ancestor that lived roughly 12–16 million years ago. Behavioral similarities: Orangutans are highly intelligent, capable of using tools, solving problems, and even learning aspects of human language when taught in captivity. They have complex social behaviors, though they are more solitary than other great apes.
