“Probably only humans have a more intensive relationship with their mothers,” according to Orangutan Foundation International. “Primatologists believe that orangutans have such long ‘childhoods’ because there is so much that they need to learn before they can live alone successfully.” Juvenile orangutans hang with mom till they’re about 8 years old, and nurse for pretty much the whole time. Get a look at some more adorable photos of baby animals with their mothers.
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.
