 They also have a deep chest , muscular limbs , a black nose , and a short , closely fitted jaw with " scissors " bite ( lower canines locked in front of upper canines , upper incisors locked over lower incisors ) . The Westie 's paws are slightly turned out to give it better grip than flat @-@ footed breeds when it climbs on rocky surfaces . In young puppies , the nose and footpads have pink markings , which slowly turn black as they age . 
