The lines that follow makes a stronger case -- Remarkably, if told to fetch a toy with a name she has not heard before placed in a pile of known, named object

The lines that follow makes a stronger case -- Remarkably, if told to fetch a toy with a name she has not heard before placed in a pile of known, named objects, she works out what is being asked for. Betsy, another border collie, will bring back a photograph of something, suggesting she understands that a two-dimensional image can represent a three-dimensional object.