Nico came to MONA at 3 years old, so young but already with a long list of bad experiences behind him. He came with serious psychological problems that led to the self-harm of his left hand in order to attain the attention of his caregivers. This continued for two years and due to the irreparable damage, the amputation of the little and ring finger of his left hand was unavoidable. In late 2005, Nico became the first nonhuman primate to be diagnosed with<ahref=”http://en.wikipedia.org/wiki/Arnold%E2%80%93Chiari_malformation”> Chiari Malformation, a condition classified as rare in humans. In early 2006 a team of neurosurgeons, Dr.Rimbau and Dr. De la Fuente, operated successfully on Nicos’ brain at the veterinary clinic Canis, and since then his condition has greatly improved. Once recovered from the operation, he stopped demanding the attention of humans through self-harm. However, his problems were not over. Although he had stopped self-harming, he still suffered from hydrosyringomyelia, the pathology of which causes a lack of pain sensation in the extremities. So after trying everything, including an autograft, in August 2008 we had no choice but to amputate the index and middle fingers which prompted his peculiar way of moving. Despite all this, he can do pretty much everything you would expect from another chimpanzee of his age.