did-you-kno: Dogs know what it means when you’re smiling. Scientists recently tested dogs by showing them happy and angry faces. Different parts of each face were isolated-to be sure they weren’t responding to seeing teeth. The dogs could tell the
did-you-kno: Dogs know what it means when you’re smiling. Scientists recently tested dogs by showing them happy and angry faces. Different parts of each face were isolated-to be sure they weren’t responding to seeing teeth. The dogs could tell the
