Besides that, dogs are getting fed much better now and live much longer than their brain and circulatory systems were designed for. Lots of dogs over 12 (15 even) and getting various behavior and memory issues - from catatonic states to falling back to non-domesticated behavior. Saturday Night Live skit with Puppy Uppers and Doggie Downers predicted the future quite well. New Purena dog foods are designed for aging dogs and have various "natural" ingredients to promote better behavior. In the case of food additives, the phrase Natural is allowed for naturally occurring molecules - even if the specific molecules that are added to the food are made in a chemical plant - as long as they cannot be differentiated in a lab (residual solvents and by-product contaminants do not have to be reported.Don't be silly. The only reason I didn't say 100% is because all dogs aren't perfect. Some are just plain stupid. Some have been mentally or emotionally twisted beyond redemption. I would say, "Any normal, healthy, dog with a good owner can behave appropriately." except that would invite a hundred posts about a few exceptions.
I am very experienced with dogs. (So is joeyd) Their, "free will" is nothing like a human or a cat. Dogs are pack animals. If you don't take a role in the pack structure, the dog arrange a suitable pack structure in its own mind. You can call that Free Will or Lack of Free Will. I call it the natural state of the animal.
I'm not a pet guy. Maybe someday but not so far.

