I Have Silver In My Track

Riddle: If a man carried my burden He would break his back. I am not rich, but leave silver in my track. What am I?

Answer: A snail.

Source: https://www.riddles.com/1291

If a man carried my burden He would break his back. I am not rich, but leave silver in my track.
What am I? — I have silver in my track by Anonymous v1.

Riddle: If a man carried my burden He would break his back. I am not rich, but leave silver in my track.
What am I? Answer: A snail. — by Anonymous v2.