Marmosets
Callithrix
Marmosets are tiny New World monkeys of Brazil's forests, specialized gum-feeders that gouge tree bark to reach the sap beneath.

Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Primates
- Family
- Callitrichidae
Other Names
Marmoset
Size
7–9.5 inches long; 0.7–1.1 lbs. The related pygmy marmoset is even smaller.
Description
Claw-like nails rather than flat nails, and, in many species, distinctive tufted ears.
Behavior
Quick, squirrel-like movement along branches and trunks.
Diet
Tree gum and sap, supplemented with fruit and insects.
Communication
High-pitched calls, some at frequencies near the upper edge of human hearing.
Habitat
Forests across South America, especially Brazil.
Life Cycle & Society
- Gestation
- ~140–150 days
- Sexually Mature
- ~18 months
- Life Span
- 10–12 years wild, up to 16 in captivity
- Athleticism
- Fast, agile movement along thin branches
- Conservation Status
- Least Concern to Vulnerable
Marmosets live in family groups, typically one breeding female supported by several helpers who assist in carrying and caring for young. Twin births are the norm across the family, an unusual trait among primates.
Selected Species
Common Marmoset
Callithrix jacchusSilvery Marmoset
Mico argentatusBlack-tufted Marmoset
Callithrix penicillataPygmy Marmoset
Cebuella pygmaea




