Possible Clues:

• Suspenseful sound
• On reverse, image's extremely strong impression
• Fitbit datum
• Third of the yard is for the cats and dogs digging up track
• Sound of walking
• Sound from an upstairs neighbor
• Bit of a walk -- Michael's got his Dizzy maybe following around
• Sound from walker; pace
• Sweetheart's overly feminine upping pace
• Twelve-inch rung, it might be left in blanket covering the ground