Red-bellied titi adults are close to each other. There is a close association between males and juvenile after the juvenile becomes self-locomoting. Red-bellied titi The red-bellied titi or dusky titi ("Plecturocebus moloch") is a species of titi, a type of New World monkey, endemic to Brazil. It lives in forests and thickets. It has a rounded head and a thick, soft coat and frequently adopts a characteristic posture with the body hunched, limbs close together, and a tail hanging down. The body is 28–39 cm long, and the tail is 33–49 cm. It can move quite fast if necessary but rarely does
Coimbra Filho's titi preferred habitat for Coimbra Filho's titi consists of densely wooded areas, preferring the dense understory and lower canopy. However, it is able to survive in damaged or fragmented forests, which currently comprise a large portion of its range. This is due to a tolerance to highly disturbed areas, as well as the ability to subsist in areas composed primarily of young or second growth forests. While other species in "Callicebus" are native to many areas of South America from Colombia to Brazil, Peru and north Paraguay, Coimbra Filho's titi is found only in a very small area in the states