Yes I searched for hours for a hog that I found the next morning 20yds from where I shot it.
If they have enough consciousness to hide before they die, that's a whole other issue. A pig can hide in grass or brush flat on the belly snout stretched out. If you're lucky you'll hear the death moans.
No, I'll put my bullet in the neck. Why would anyone pass on a guaranteed incapacitation. Pigs move randomly enough that they'll present the shot.