Wind a mile off ?

Those Foundation dogs wind dead cows a mile or more just like my nose....... But on the other hand a square mile is only 640 acres, have had great exceptional dogs take off and wind a hog in a tank wallowed up lots of times, but hogs and cows weigh more and have more scent than coons and bocats, thats why you dont see coon dogs or cat dogs doing it. Think about how much more scent a hog in a tank produces and a cow as well, say average hog is 250 pounds, its a boar it going to smell more, if it has wet mudd on it and nutsack full of stink grease a mile prob not a prob for a average dog. But i think most of time when a dog hits like this sometimes its an old track and dog has learned that if it cant tell how old it it is to strike it will run it down until it can and then the guys claim my dog smelled that cow or hog a mile away when it actually it did not do anyting but hussle up a game trail until it found fresh scent or the actual cow or hog. Cows and hogs dont stay in the same place usually. It sure helps if it is not 130 degrees outside too, seems like night time and about a 4 to 7 mpg wind is going to help a dog find a cow or hot a mile away, in the summer sure help if its a hog laying up in a waller with basketball nut sacks that was rubbing all over mesquite trees as well before it went for a smim and mudbath. Guees a mile winder needs some wind blowing into him, a stinky boar or bull and a waterhole for them to hang around to produce a ton more scent that might be drifting up for a dog to get a whiff to know go into the wind to where its coming from.