Hitting moose is a big problem in Scandinavia, too. Which is why the Moose avoidance test was invented to see how well different cars would perform in this scenario:

First you avoid the moose by turning into the other lane, then you must get back into your own lane to avoid oncoming traffic.

As pointed out above, cows are a bit similar to moose in size/shape, and no more sensible.
Fatal accidents occur regularly between cows and cars, and cows can derail trains with loss of life.
This video shows the rescue efforts after a train hit a cow at about 80 MPH.
http://video.stv.tv/bc/news-090730-archive-polmont/

Cows are not as leggy.
I am not clear if Art's cows were laying down on the road or standing either.

People have mentioned how hard moose are to see and moose are counter colour camoflaged.
Even in the headlights they tend to match the look of the road because they are usually darker on top than they are on the legs.
At your eye height the dark body just looks like the rest of the night does and the legs look like the headlight glare reflecting back off the road.
In the fog, rain or snow it is worse

One winter night I counted 27 moose on the road between Wawa and Timmons.

Moose are big enough to kill transport trucks.

Anyhow, sane folks do not hunt large animals with their motor vehicles.
Slow down at night please.

The cows were standing on the road. Black cows on black, newly repaved, road, backed by scrub oaks so they where not skylighted, were just about invisible. At 70mph my bumper would have hit them in their knees and I have no doubt that one or more of them would have taken up residence in my lap.

To this day I'm not sure what it was about that small flash of light that caught my attention. I got lucky.

"I got lucky."

I have a lot of related stories, and too many personal close calls.

My father always tells the story of a neighbour's horse who had a talent for opening gates with his teeth (common problem BTW). The neighbour got tired of this and put a rope on his halter, dragging a dead tire on the rope. Kind of an anchor. Dad was bringing us home late in the evening, dead dark, and couldn't see the horse, but the tire caught his eye just in time. This, I guess, is one reason why I am still here.

i think it might be Sabb or one of those Swedish car companys that not only crash tests their cars onto a wall but onto a moose dummy made from heavy cable and rope.

Both Volvo and Saab do that:

Moose crash test