Pygmy marmosets are the world's smallest monkey. Their welfare in captivity requires large social groups, complex arboreal habitats, and specialist feeding management.
Pygmy marmoset welfare in captivity demands specialist knowledge and infrastructure that most facilities struggle to provide. Their specialised gum-feeding ecology requires creative provisioning of appropriate substrates — commercial diets alone cannot meet their nutritional needs. The family group social structure, with cooperative infant care as a central feature, means isolated or pair-housed marmosets have impoverished social environments. Metabolic bone disease, common when UV and calcium provision is inadequate, causes pain and skeletal abnormalities. The exotic pet trade in marmosets creates frequent welfare disasters — marmosets seized from private ownership often show severe developmental and nutritional problems from inappropriate early care. Accredited facilities with genuine expertise in callitrichid husbandry represent the appropriate setting for these animals.