They may also be less likely to be nervous around unfamiliar humans as they are bred for company rather than solitary working. (thehappypuppysite.com)
Francys Subiaul of the George Washington University and his colleagues showed that captive chimpanzees are able to make judgments about the reputation of unfamiliar humans by observing their behaviour — whether they were generous or stingy in giving food to other humans. (newscientist.com)
«It's amazing sheep can quickly learn to recognise unfamiliar human faces presented in different viewing perspectives,» says Kun Guo of the University of Lincoln, UK. (newscientist.com)