Scent-marking in mammals has been frequently related to within-group social and reproductive dominance and to defense of territory and resources. ... Our results suggest that scent-marking is not strictly tied to reproductive dominance or territorial (or resource) defense in common marmosets.

Do female marmosets stink?

There's no inherent odor to pygmy marmosets themselves, but their urine can be rather strong-smelling.

Are marmoset monkeys intelligent?

These tiny marmosets gained popularity as pets in the United States due to their diminutive size and cute faces. However, they are still wild animals. ... These are intelligent animals and their first couple years of life leave a major imprint.