Definition
The *genus Callicebus* encompasses all titi monkey species found throughout South America. Titi monkeys are recognized for their strong pair bonds and tail-twining behavior. These primates are typically small and arboreal, inhabiting forests and woodlands. Their diet consists mainly of fruits, leaves, and insects. The classification within *genus Callicebus* aids in understanding their evolutionary relationships. Conservation efforts often target specific *Callicebus* species due to habitat loss.