Ha, Abby (our boxer) could care less about leaves and chasing things when walking. Brady though...our joke while walking is "Must...snnf snnnf snnf....sniff....snnf snnf....everything!" He chases, eats, plays with, jumps on, sniffs everything! He's crazy...But he's always tired at the end! ahhaha! Outside, he has a blast chasing and catching leaves that we throw for him...but you must be careful...he did development an eye infection and it may have been from the leaf crumblies getting in his eyes (may have also been from digging for chipmunks).