Here are some general factors that influence litter size:
* Species: Some monkey species, like marmosets, are known for having twins, while others, like gorillas, typically have only one baby at a time.
* Age and health of the mother: Older or unhealthy mothers may have smaller litters or fewer offspring overall.
* Environmental conditions: Food availability and habitat quality can impact reproductive success.
It's important to understand that each monkey species has its own unique reproductive biology, and generalizations about how many babies they can have are not always accurate.