Fauna
Mammal

Black-tufted-ear Marmoset

Callithrix penicillata

Also known as Black-tufted Marmoset, Mico-estrela

Black-tufted-ear marmosets leap through the forest canopy in tightly knit family groups led by a dominant breeding pair. Specialized chisel-like incisors allow them to gnaw holes in tree bark, tapping into nutrient-rich gums and resins during seasons when fruit is scarce. Introduced populations thrive in urban parks across southeastern Brazil, adapting seamlessly to life alongside humans.

ArborealSocialTropical
Black-tufted-ear Marmoset reference1 / 7
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyTree Sap, Insects, Tropical Fruits
Predators
  • Raptors
  • Snakes
  • Tayras
ThreatsHabitat fragmentation, illegal pet trade, hybridization with non-native marmosets
HabitatsGallery forests, cerrado woodlands, rainforests, urban parks
Life span10–15 years
Classification
  1. FamilyCallitrichidae
  2. SpeciesCallithrix penicillata
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Can deliver sharp bites if cornered or handled; maintain a safe distance.
Why it is dangerous
Possesses sharp incisors intended for wood gnawing, capable of inflicting deep puncture wounds if cornered.
How to recognize a risky encounter
Recognizable by prominent fan-like black hair tufts around the ears and a long gray-ringed tail.
What to do
Observe from several meters away; never attempt to touch, catch, or feed wild marmosets.
Responsible observation
  • Observe from Below: Look high in gallery forest trees or canopy layers where troops leap actively.
  • Avoid Feeding: Refrain from offering human snacks to prevent diet-related disease and aggression.
  • Listen for Calls: Track high-pitched trills and alarm whistles to locate moving family groups.
Related species
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