Capuchin monkeys trained as service animals for people with mobility disabilities raise complex welfare questions about primate use in this context.
Capuchin monkeys in service animal roles exist in an unusual ethical space. Well-trained individuals in enriched settings with attentive human partners had some welfare needs met. However, capuchins are social primates who need conspecific companions. Life with a single human partner, however close, cannot fully meet their social needs. Dental alterations performed for safety reasons cause welfare harm. The program represented genuine attempts at welfare within a fundamentally compromised framework.