Most of the primates are a sort of monkey called rhesus macaques. They are designated for use in scientific research, including experiments for COVID-19.
Further, it has recently been shown that rhesus monkeys kept on caloric-restricted diets for an extended time (nearly 15 years) have less chronic disease.
Rhesus macaque monkeys show eye movements similar to our own when observing pareidolia-inducing objects and real faces, suggesting that this phenomenon is baked deep into our social primate brains.