Signs

As you can see, they're not kidding. We had to come almost to a complete stop for one cow. Note the cattle grate across the road.

At the Grand Canyon - it became a catchphrase for all our canyon hikes.

In the bathroom at the Needles campground.

Others seen but not photographed include elk crossing, prairie dog crossing, and my favorite, in New Mexico, the philosophical statement "Gusty winds may exist".