Nor is research necessarily always significant and worthwhile in the few zoos that do it and can be misleading. For example, zoo animals make unreliable subjects for behavioural research. Their living conditions are artificial and many zoo animals are mentally deranged (more below). We now know from field studies on wild-living animals, like wolves and chimpanzees, that the social organisation of animals in the wild where humans do not disturb them are completely different from their zoo counterparts.