How long do monkey live on the average?

It's impossible to give a single average lifespan for all monkeys. Monkey lifespans vary greatly depending on:

* Species: Some monkeys, like the common marmoset, have a relatively short lifespan of 10-15 years. Others, like the orangutan, can live for 40-60 years.

* Habitat: Monkeys living in the wild face numerous threats, including predators, disease, and habitat loss. This often results in shorter lifespans compared to those in captivity.

* Individual health: Factors like genetics, diet, and overall health play a role in individual lifespans.

Here's a general idea:

* Small monkeys: Typically live for 10-20 years

* Medium-sized monkeys: Can live for 20-30 years

* Large monkeys: May live for 30-50 years or more

It's best to research the specific lifespan of a particular monkey species if you're interested in learning more.