In the diverse tapestry of the ONCA Sanctuary, the Saimiri Boliviensis, or Bolivian Squirrel Monkeys, hold a special place. Our group of 12 individuals exemplifies the remarkable inter-species dynamics that can occur in carefully managed conservation environments.In the wild, Squirrel Monkeys naturally follow groups of Capuchin Monkeys as a strategy for predator defense. Mirroring this natural behavior, we have nurtured a harmonious coexistence between our Squirrel and Capuchin Monkeys. This unique interaction not only enhances their social environment but also offers an extraordinary opportunity to observe and understand their interspecies dynamics.