They start out just like us..........small. Parental units teach them but they make mistakes and leave tracks.
The back story is that I was out for a Sunday drive exploring an area that I was introduced to as a child in the late 60's. I parked at a spot over 3,000' in elevation. Changed coffee and wandered around. About 50' from my vehicle, I found a trackway of small feet leading downhill. Elegant prints with very little heel strike and good lift off at toes. I improvised a measuring device in the way of a 'craft stick' with metric markings. The larger lines are centimeter divisions. The craft stick is about 4 1/2" long / 115 mm. It is light weight and rigid. I was on site for 2 days to monitor print degradation overnight. Morning sun angle was good for toe interpretation. The slope was on a hill, about 12 degrees. Compound slope going downhill and not flat. Soft dirt next to gravel. Rigid type tape measure was awkward to use because it would fall over. There is an image with the tape measure and a dangling small tape. I dangled the small tape above the ground to give a vertical reference to the slope of the hill / tracks. The print below the little tape is from my shoe.
I monitored the site over time. I interfered with their hunting. 1 to 3 trail cameras did not produce results.
The images are old. Scanned from transparencies except the 1st image with craft stick and scale.