20. Capuchin Monkeys
Capuchin monkeys are highly intelligent and social primates, but their care requirements are exceptionally complex.
In captivity, capuchins often develop aggressive behaviors and pose significant disease risks to humans.
They also have long lifespans, sometimes outliving their owners and creating long-term welfare challenges.
The Jane Goodall Institute highlights the many issues associated with keeping capuchins as pets, emphasizing that their needs simply cannot be met in a domestic environment.