news mysteries

(I need a "WTF?"-style icon.)

Some days the news raises more questions than it answers. CNN reports: "Three climbers who fell from a ledge on Mount Hood are huddled in their sleeping bags with a Labrador retriever to keep warm as they await rescue, according to an official with the rescue team."

I read the whole story. It does not address my primary question upon reading the opening paragraph: where'd the dog come from? Do people really go mountain-climbing with dogs? (How?) Or was it just a lucky coincidence?