1. Infancy:
- Born helpless and fully dependent on their mothers.
- Carried by their mothers and cling on with long prehensile tails.
2. Juvenile stages:
- Start developing motor skills such as climbing and leaping.
- Gradually explore their surroundings while staying close to their mothers.
- Form strong bonds with their mothers and play with other juveniles.
3. Subadult:
- Become less dependent on their mothers and spend time with juvenile peers.
- Improve in social behaviors and learn from older, experienced monkeys.
- May engage in practice displays of adult behaviors.
4. Adult:
- Reach sexual maturity, typically occurring at around 5-8 years old.
- Males undergo physical changes such as enlarged canines and increased mane growth.
- Females participate in mating and reproduction.
- Engage in complex social interactions, such as establishing their place in the hierarchy and forming stable social groups.
The specific timeline and duration of these stages can vary slightly across different species of spider monkeys.