Monkeys are ticklish, too!
What could be cuter than a ticklish baby? A ticklish baby ape!
Scientists have confirmed that baby orangutans, gorillas, chimpanzees, and bonobos laugh too. In a study in the journal Current Biology, scientists explain how they verified that what sounds like monkey laughter is, adorably, just like people laughter.
National Public Radio just did a great story on the research. Check it out -- there's even an adorable clip of a laughing gorilla and orangutan.