Although the practice of collecting animals has been around since 2500 BC (Dunlap and Kellert), efforts to keep the animals in a safe, natural habitat have been poorly carried out . Psychological manipulation consequently lured chimpanzees into mental illness, as in the article “How abnormal is the behavior of captive chimpanzees living in a zoo?” » Lucy P. Birkett and Nicholas E. Newton-Fisher wrote: “Many chimpanzees (Pan troglodytes) kept in laboratories exhibit a variety of serious behavioral abnormalities, such as repetitive rocking, urine drinking, or self-mutilation. » Social and maternal separation for the benefit of research is also linked to psychological trauma (Dunlap and Kellert). Although throughout history zoos have served to entertain, this is a trivial reason to keep chimpanzees confident. Therefore, it is inhumane to take primates from the wild and place them in a zoo, business or laboratory, thereby depriving them of their ability to act naturally. Primates housed in organizations like zoos and laboratories have developed catastrophic behavior; due to lack of their natural habitat and loss of freedom to lead their own lives. Chimpanzees strove to adopt abnormal and often revolting behaviors. During their lives in captivity, they bite each other, drink urine, eat feces, pat each other's genitals, rock, pull each other's hair, and fiddle with their nipples (Birkett and Newton-Fisher). Another factor that gives chimpanzees the need to display eccentric habits through psychological suffering is advocated in their captive conditions. As Dunlap and Kellert explain, "Despite improvements in exhibit design, many animals remain confined to dirty places... middle of paper... Apparently the chimpanzee has become a species endangered in 2002. Vital funds for zoo affiliates. research and field work should be conducted elsewhere, because it is not our place to manipulate the lives of others – human or animal. Freedom is important in the lives of chimpanzees to maintain a healthy and healthy lifestyle. Being born and raised in the wild is where chimpanzees should stay. Far from cruel research and encouraged to behave in unnatural ways. As Jane Goodall explains, “. . ...there really is no justification for forcing these amazing creatures to suffer for our amusement or gain. Once a rescued chimpanzee is returned to its natural habitat, the glow seen in its presence is unreal. Stopping the industry that uses chimpanzees for entertainment and testing is truly a serious problem and more publicity about their condition should be released..