Crying Wolf

Itzik, an Israeli tour guide was taking a group of North American kids on a hike in the desert when one boy asked him whether he had ever come face to face with a wolf.
"Yes," said Itzik, "I did come face to face with a wolf once. What made it worse was that I was alone and unarmed."
"What did you do?" asked the boy.
"What could I do? First, I tried looking him straight in the eyes but he slowly advanced towards me. I crept back, but he kept on coming, nearer and nearer. I had to think fast."
"Wow! How did you get away?"
"As a last resort, I just turned around and walked quickly to the next cage."