387379 Dogs have a keen sense of smell. Mouseneb 47543 The kid has a keen sense of hearing. CK 50392 The child has a keen sense of hearing. CM 304130 He has a keen awareness of the problem. CM 3022410 The dog has a very keen sense of smell. sharptoothed 615281 A dog's sense of smell is much keener than a human's. darinmex