Every dog and every person is different. I got a dang good gyp gave to me for her "aggression" issues. She has been very, very close to the chopping block several times (in my yard and where she came from), but her being a quality hog dog has saved thus far. The only way I know to describe her is, she's just a bitch!
She doesn't tolerate any goofing off or butt sniffing in the woods, and will tune a pup up real quick. She also seems to carry grudge's. Most of the time she doesn't really have an all out fight, just a nip and bark in an attempt to straighten up or prove dominance.
Not that long ago we were on a hunt with dogs scattered in shoats. When she got to another dog that had one caught (a dog she had really gone at it with at her previous yard), she caught the other dog instead of the pig. Well, that other gyp has now grown up a lil and commenced to whoopin her a gooden. Now since then, I have noticed her to be calming down more.
Now, after putting much thought into this and reading others experience/opinions...I think the time I spend letting the pups out of their kennel and paying a watchful eye (me getting on her if she so much as bristles up to the annoying pups) and her getting her tail handed to her in the woods has hopefully saved this ol cranky gyp a few more days on top of the dirt.
But, it is hard to cull a sure nuff hog dog for things we roll our eyes at with our ol lady's