JRT's are cute, that's for sure, but they are ALOT of dog in a dinky body. Terriers in general take alot of work because they are extremely stubborn, fiesty, dominant, and they have minds of their own. They are usually very hyper, and in the wrong hands, they are often extremely destructive. That's something that is genetic, it's not a fault. That's why you don't see many of the small terriers in obedience competitions! If they don't want to do something, they are not going to do it. I always feel so much appreciation for terrier owners who understand the genetic makeup of their dogs, and work WITH it instead of against it. I could not own a terrier because I am too spoiled by my extraordinarly eager to please aussie mix...and my overly friendly and happy pugglet girl. But to each his (or her) own.