After receiving this information, I prepared myself to be surrounded by a lot of disgruntled, angry, and damaged monkeys. These expectations were only somewhat accurate. Let me explain.
Several of the monkeys at our sanctuary, including former pet India, still engage in the self-directed behaviors, such as spinning or biting their arm, they relied on to cope with stress in their former lives. Some of the sanctuary residents endured experiences that took a toll on their health. For example, a few of the monkeys have diabetes and/or are overweight, either as a result of previously inappropriate diets or because of their utilization in obesity studies. One sanctuary resident, Theo, suffered from chronic eye problems, but the staff wasn't sure what the cause was ... until he was taken to a specialist and they discovered a loop of wire left over from a research project embedded in his eye.
Also, certain individuals exhibit behaviors left over from their days as "pets." Tamae, for example, often presents her backside to the staff for grooming, and if her request is not immediately met, she becomes visibly frustrated. Alice, kept as a "pet" for years, has to be treated with more caution than most of the other monkeys due to her hostility toward humans - which is quite understandable, considering what she was forced to endure in her former life. I would be lying if I said that witnessing the repercussions of forcing wild animals into an unnatural life in captivity did not make me angry.