atmosphere conditions have a lot to do with what a dogs noses picks up humity,dry air ,wind ect. If you readup on search& rescue dogs youll see why one day a dogs a superstar next day he may sucks.You ever notice how somedays farts hang around longer? Those are some good lookin dogs what are they?
x2...
you can't train a dog to have a better nose but you can train him to bark or whine when he smells a hog... either from the hood or in the back of the truck or even on the 4 wheeler...
the way I know how to train a dog to wind and bark is to stage a hog cross wind from a road or straight away. mark exactly where the wind is crossing carrying the hog scent. now go and pick up the dogs and set them up the way you will rig them...then slowly drive along and when you reach the marked spot slow down and see how the dogs act...you might have to sic and his the dogs into a frenzy...once you know they are smelling hog cut them loose and they should go to the hog...if they don't it could be that the scent is rising as it is coming across the road...you can help the dogs by acting excited and you will act like you have winded the hog and you run toward the hog. The dogs will eventually pick up on the scent and should get ahead...do this a couple of times on different days and you will have some rig dogs...sometimes as a handler you will notice that the dogs can wind one from the on top of the box...but when they hit the ground they lose the scent...so as a good handler you lead them toward the hog and then they will move ahead when they pick up the scent again...