- America Zoo: Pygmy Marmoset (Cebuella pygmaea)
- Provides status, classification, name, habitat, description, behavior, and reproduction information.
- Animal Diversity: Pygmy Marmoset (Callithrix pygmaea)
- Offers pictures, classification, geographic range, habitat, physical description, reproduction, longevity, behavior, food habits, and status.
- ARKive.org: Pygmy Marmoset (Cebuella pygmaea)
- Explores facts and status, description, range and habitat, biology, threats and conservation, and related species.
- Oregon Zoo: Pygmy Marmoset
- Information includes scientific name, size, characteristics, behavior, reproduction and lifespan, diet, habitat and range, and status.
- Pygmy marmoset (Callithrix pygmaea)
- Gives overview, statistics, description, distribution, habitat, diet, behavior, reproduction, and conservation status from BBC Nature.
- Saint Louis Zoo: Pygmy Marmoset
- About The Animals page includes exhibits at the zoo, pictures, location, habitat, size, activity, diet, social groups, and defensive behavior.
- WAZA's Virtual Zoo: Pygmy Marmoset (Callithrix pygmaea)
- Explores map and images, partial classification, names, locations, general habitat, status, populations, description and behavior, and guidelines for zoo exhibits.
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