John Hunter wrote:
Get yourself some grill guards http://www.arcrite.com/grill.aspx  

grill guards only help if the deer is in front of you, most of the accidents here, have been the deer running into the side of the vehicles, it's like they wait until the truck is right there and then they go! I've stopped and waited until they make up their mind whether they're crossing or not.
Those hogs are too low to the ground for a guard, they do more damage than a deer, they usually travel in packs of 3 or more, you hit that, and your vehicle is toast.