Watching Monkeys

- They seldom relax,are very cautious, nervous, and easily o be irritated or scared.
- Sometimes, even if there are no other monkeys beside him/her, a higher calss monkey still presents groom.
- Direct eye contact from me can easily draw attention and often get them nervous even if I'm actually smiling at them.
If I use binocular, it seems they don't think I'm watching them.
- Aggression and fight never stop in the cage. Screams ring all the time. But the point is they have food, water, place to live, toys... almost everything they need to live a comfortable life. They still fight, even to death. So it means monkeys also have extra psychological needs for life, such as higher class in the monkey society which benefit them with more groom, and even respects.
- My other wonder is whether they intrinsinclly have disturbing "soul"? Older infants, juveniles and young adults need to move and rarely sit quitely for 10 seconds except when eating and drinking. How many of their behaviors are spontaneous, and how many are illicited by the environment?