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Extraordinarily. They're also rather willful, so you have to be prepared for a long and arduous training. That being said, they are very smart, very loving exceptionally faithful, and a very healthy athletic breed. The only problem I had with mine was that I got him second hand from an awful owner, and he was already ~1 yr. old. He was tough to train and whenever left unattended he found his way out of the yard. Still a great dog and my personal favorite breed.