Experiments have shown that chimpanzees can distinguish crystals from ordinary stones and display a special interest in them, examining their geometry and transparency. This behavior is believed to be linked to the ancient roots of symbolic thinking in primates.
Studies have shown that by observing the facial expressions of mice, it is possible to determine not only their emotions but also their decision-making strategies. Analyzing subtle facial movements reveals complex cognitive processes and the simultaneous consideration of alternatives, opening up new possibilities for non-invasive diagnosis of mental and neurodegenerative disorders.