Bonobo. Along with chimps, bonobos are our closest cousins.
The bonobo is one of the most rare and intelligent primates in the world; they’re only found in a small part of the Democratic Republic of Congo and, among other things, their social structure is unique, complex, and largely peaceful.
Young bonobos comfort with hugs
Young bonobos comfort by hugging Also: Bonobo: The Forgotten Ape/The New York Times http://www.nytimes.com/books/first/d/dewaal-bonobo.html