This is an agile gibbon, also known as a black-handed gibbon. Like orangutans, chimps, gorillas, bonobos and humans, gibbons are classified as apes (the lack of a tail is primarily what makes an ape an ape and separates them from monkeys and lemurs). Gibbons don’t get full ape status, however, and are known as lesser apes. They have extremely long arms and are very fast and acrobatic in the trees. This particular gibbon was quite bold and very friendly and I was able to photograph him at close range with a wide angle lens.