Rescues behaving different from dogs from people?

[Monkey]

I know it sounds messy but let me explain.. I am from sweden, in sweden we only have one pound, and a few organisations that does rescues. We have no strays what so ever and not many dogattacks. Sweden is an extremly dogfriendly country you can bring ur pitbull, rottie, pekingnese poodle everywhere. People can see an insecure pitbull lounging themselves they still not become that scared. THe only "rescues" I have been dealing with before have always come straight from families where they either have been somewhat abused due to neglect or just misstrained. A dobermann, rottie, pitmix is not always as easygoing as some people belive. Monkey (as I call the pit I have now) is different in his behaviourpattern than what I am used to, it is nothing bad cause he is truly a good dog. But I would like to know what you guys know what alters the behaviour from dogs that comes from people, compared to the ones that have been sitting in a pound?
It feels somewhat that the pounddog doesnt really care if he gets beat again as long as you touch him/her compared to the dog that does come from a family. Like a pounddog is more gratefull to work with... (this one is highly intelligent, he picked up his collar and ran to me with it, and he has not been trained as far as what we know, I know he dodge from a raised hand and leash so I know he has been beat up and a person beating his little puppy will prolly not train it to go fetch collar I doubt that). Do you guys understand what I mean? I would like to know more and do more comparancy, especilly since I am going to sign up with the ASPCA volounteer program next month and I do not know a lot about pound dogs nor strays. I am only used to the average abused family dog (usually working breed terrier mix that had too much energy to handle).
Thank you all in adnvance. :)

[skunkstripe]

Hi Monkey,
I think that when dogs have lived in a family they have the potential for both good and bad experiences that they do not have in a pound. In the pound their lives are very "neutral", they do not bond with humans, they are not trained much, they are also not abused. Rescues possibly have had both very negative and very postive experiences.
We have posted some stories of individual dogs in this section, perhaps reading them will help you gain a perspective?

[Monkey]

Hmm that would explain things.. I am just trying to get a grasp since I change my training methods after the dogs. The better I understand their background the easier it will be to help them change in the better way.
Thank you for your advice I will go there and read!