@Quercus:
And some are having problems because their dog was born with a naturally poor temperament…then compounded by lack of appropriate guidance with how to deal with these problems.
It is incredibly simplistic and inaccurate to assume that people who are having aggression problems with their dogs are at fault for "spoiling" them, or humanizing them.
While I agree that there can be many causes for aggression and bad behavior in dogs, I do not believe anyone here is being simplistic or inaccurate. There are many factors that affect temperament, and bad breeding is not at fault for all of the problems that people encounter with their dogs. In fact, I would venture to say that genetically 'poor temperament' accounts for far less of the problems than is claimed. It is a known fact that 'nurture' counts for at least as much if not more of personality development than 'nature' in humans. This is bound to be true for dogs as well.
I am not saying that all problems can be overcome with the right training methods, because I know for sure that it is not true. I've owned a dog that was a biter. We never knew why he bit, and he never bit family. We never overcame this, we learned to manage it, by keeping him away from strangers, and muzzling him when necessary for his protection as well as the protection of others. I do not know if his problems stemmed from nature, or from nurture, because he was a rescued stray, and I had no background on him before he came to me.
I think it is convenient for people to say "oh this dog was probably poorly bred and thus has bad temperament." As opposed to taking responsibility for their part in the dog's problems. Once a behavior has become 'set' in a dog's mind, it can be a lot of work to overcome it. Some people choose to look the other way or blame breeding instead of properly dealing with the situation.
To be fair to the animal all medical issues must be fully explored and off the table, and then a hard look must be taken at the 'nurture' part of the equation, before throwing up one's hands and blaming 'nature.'
When it comes to rescue dogs, since we have so little information about where problems stem from that much care, and expertise must be applied to properly manage their situations.
Randa