If there was an award for the cutest animal in a major role, it would have to go to Mona, a common marmoset, for her performance in the Monterey Zoo's education program. She's now retired and resides ...

The common marmoset may be small enough to fit in the palm of a hand, but the diminutive stature of these monkeys belies their enormous significance in unraveling the intricate mysteries of human ...

Marmosets are small monkeys that live high up in the canopies of South American rainforests. There are more than 20 species, and most could fit comfortably in an adult human's hand. Marmosets have ...