In my book, the cow, deer, moose get it EVERY time. You know what kind of critter you are looking at with them. But......if you try to swerve or evade....ya never know what kinda critter is waiting for you in the ditch.
If you try to swerve, it won't matter what kinda critter is waiting in the ditch, cause you'll probably land on top of it, after the truck lays down & slides sideways.
If I can't steer [that's a pun!] around it, it gets hit. If that means I come back as a bug in the next life, well, some days you're the windshield.....