A big animal like an elephant, on walking over the footprints of a smaller animal, like a camel, will cancel them out.
From: Fulani
General comments
The Fulani or Fula or Fulɓe or Peul live in West and Central Africa, mainly in the countries of Nigeria, Senegal, Guinea, Cameroon, Mali, Guinea-Bissau, the Gambia, Chad and Central African Republic.