Marmosets

Marmoset are of the order primates. They belong to the new world monkeys and are any of numerous species of small long-tailed South American monkeys. Similar in appearance to squirrels, marmosets are tree-dwelling primates that move in a quick jerky manner.  They are highly intelligent creatures who get easily bored, that is why the zookeepers give them enrichment time by putting food in a container where they have to figure out how to get the food out.