Dogs look at a person interacting with a new object longer than a person interacting with a familiar object moved to a different location, suggesting perception of goal-directed behavior, according to a new study.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/F...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/F...