Eye contact

This is an image of some kind of monkey at the San Diego Zoo. I love it when you get eye contact with an animal, I was going through some pics and I thought I had to post this one. I wonder if the he/she is caged for safety reasons or for fear of it escaping? I’m sure that there were some species of monkeys in the zoo that were free to roam their area and they didn’t seem to come towards the people so whats this guy’s story?! I’m hoping some monkey lover can help me identify it and solve this mystery :) In the meantime, enjoy the weekend everyone.