Left side combines a small stroke at the top with the ear
耳 below — depicting a hand reaching down to seize an animal's ear or tusk, the iconic gesture of a daring act in oracle-bone script. The fused top-stroke (1 contraction stroke) plus full
耳 below give the 'seizing dangerous prey' image that grounds the meaning 'to dare'. Standalone
耳 = 6 strokes; here 7 because the grasping mark is fused in.