Colobus monkeys are usually pretty relaxed animals, preferring to hang out and relax in trees. They are also known as old-world monkeys, as they evolved around 2-4 million years ago. These ones were from the Calgary Zoo; as I observed them, I found that they just liked sitting on a branch or log and didn't seem too active. Their stoic look really catches my eye, and I find their natural black and white fur to be well suited for monochrome.
