We adopted some dogs that have been abandoned; those you don't pick for any traits besides them not being completely crazy/vicious. We had (and have) ones that

We adopted some dogs that have been abandoned; those you don't pick for any traits besides them not being completely crazy/vicious. We had (and have) ones that no-one wants because they are too smart; they are escape artists and very good thieves. They know how to trick you. They are absolutely not obedient, even after training (they seem to train easy, but they are just doing what gives them the quickest treat; if that ends they immediately stop again). I like them more than the obedient ones really.