FaunaHub

Tamarin (Leontopithecus rosalia)

MammalPrimateSouth America

Golden lion tamarin (Leontopithecus rosalia), a small monkey with a flame-orange mane.

Golden lion tamarin (Leontopithecus rosalia).

Image: Wilfredor, CC BY-SA 4.0, via Wikimedia Commons.

Overview

Tamarins are small New World monkeys of the family Callitrichidae — the same family as marmosets — found in the forests of Central and South America. Many are strikingly ornamented, with manes, moustaches, or crests. The golden lion tamarin (Leontopithecus rosalia), shown here, is one of the most beautiful: a small monkey wreathed in a flame-orange, lion-like mane, native to the Atlantic Forest of Brazil.

The golden lion tamarin is also a famous conservation icon — brought back from the brink through captive breeding and reintroduction — though it remains Endangered.

Conservation note: tamarin status varies by species; the golden lion tamarin is Endangered due to habitat loss and fragmentation. Verify current status at iucnredlist.org.

Habitat & Range

Tamarins live in tropical forests from Central America through the Amazon and into the Atlantic Forest of Brazil, depending on the species. The golden lion tamarin is restricted to lowland Atlantic coastal forest in a small area of Rio de Janeiro state — a habitat that has been heavily reduced and fragmented, which is central to its conservation story.

Diet

Tamarins are omnivores, eating fruit, flowers, nectar, tree gum and sap, insects, spiders, and small vertebrates such as frogs and lizards. The golden lion tamarin forages actively through the canopy, often probing bark crevices and bromeliads with its long fingers to extract hidden insects and other small prey.

Behavior

Like marmosets, tamarins live in cooperative family groups and commonly raise twins, with the father and other group members helping to carry and care for the infants. They are agile, claw-equipped climbers active by day. Golden lion tamarins sleep in tree holes for safety and warmth and use scent and calls to defend a group territory.

Human Interaction & Conservation

The golden lion tamarin is a flagship of tropical conservation: decades of captive breeding in zoos, reintroduction to protected forest, and habitat restoration (including forest corridors) helped pull it back from near-extinction. It is still Endangered, and its survival depends on protecting and reconnecting Atlantic Forest. Other tamarins face varying levels of threat. Consult the IUCN Red List for species-specific status.

More photos of the tamarin

Portrait of a golden lion tamarin, showing its lion-like golden mane.

Golden lion tamarin (Leontopithecus rosalia).

Image: Jeroen Kransen, CC BY-SA 2.0, via Wikimedia Commons.

Frequently Asked Questions — Tamarin

What is the difference between a tamarin and a marmoset?
They are close relatives in the same family (Callitrichidae) and look broadly similar, but differ in details — for example, marmosets have specialised chisel-like teeth for gnawing bark to feed on gum, while tamarins generally lack that adaptation and rely more on fruit, insects, and other foods. Both are small, group-living New World monkeys.
Why is the golden lion tamarin famous in conservation?
It is a celebrated conservation success story. Reduced to very low numbers by Atlantic Forest destruction, the species was bolstered through international captive breeding, reintroduction into protected forest, and habitat restoration. Numbers recovered substantially — though it remains Endangered and dependent on ongoing protection.
Why is it called a 'lion' tamarin?
Because of its mane. The golden lion tamarin has a thick, flame-orange ruff of fur around its face that resembles a lion's mane, which — together with its golden colour — inspired the name. It is one of the most striking-looking of all small monkeys.
What do tamarins eat?
Tamarins are omnivores, feeding on fruit, flowers, nectar, tree gum and sap, insects, spiders, and small vertebrates like frogs and lizards. The golden lion tamarin often uses its long fingers to probe bark and bromeliads for hidden prey.

Sources and further reading

Authoritative wildlife references used for general educational context. Conservation status should always be verified against current IUCN Red List data. External links open in a new tab.