The Lone Ranger And Tonto

The lone Ranger and Tonto are riding their horses when Tonto falls off. He lands in a ditch. The lone Ranger walks up and says "Tonto are you ok"? Tonto puts his ear to the ground and remains quiet. The lone Ranger repeats himself and Tonto quiets him and says "buffalo come" the lone Ranger says " you can tell that by listening to the ground"? Tonto says "no, ground very sticky.