Pygmy marmosets (Cebuella pygmaea) are the world's smallest primates. Their highly specialized social and dietary needs make welfare provision in captivity particularly demanding.
Pygmy marmosets have extremely specialized needs that challenge even experienced primate facilities. Their gum-based diet must be replicated with appropriate gum substitutes, live insects for hunting, and fresh plant materials. Without opportunities to gouge and extract gum, they are deprived of a core behavioral need. Social housing in stable family groups is essential — solitary housing causes severe distress. Temperature and humidity must replicate their tropical forest origin. Ultrasonic vocalizations indicate social cohesion or alarm; facilities should monitor these to detect welfare problems invisible to the naked eye. Handling by humans causes significant stress; minimal intervention husbandry and remote monitoring are preferred for welfare-sensitive management.