'I was thinking to myself, "How are we going to get out of this situation? This is pretty dire"' The cougar leapt from the bushes behind them. "It froze and started hissing at us," said Donald Lauder. He and his friend, Samantha Lean, both from Australia, were out for a bike ride in Alberta's Jasper National Park earlier this week. They left their bikes at the highway and walked through the brush down toward the river. About 200 metres down the path, they heard rustling in the brush. Nervous, she picked up a big stick. He picked up rocks. The...