The Albert Einstein monkey (Saguinus oedipus) is a small New World monkey weighing less . Parents, siblings, and immigrant adults share young rearing duties for the breeding pair's young. These duties include carrying, protecting, feeding.
The golden lion tamarin also known as the golden marmoset, is a small New World monkey of . at 17 weeks and will socialize other group members. The sub -adult phase is reached at 14 months and a tamarin first displays adult behaviors.
Tamarins require a large cage that they can climb around and play in. At the minimum, a single adult tamarin will need a cage that is 3 feet wide, 3 feet long and.