Funny, because every book I've read. Every breeder I've met. Has told me, "Be careful of terriers. THey're territorial and difficult to train." It's just in their blood. Just like Chihuahua's are territorial. I did my research before buying a dog, and all the results said the same...
Doesn't help that the owners are lazy as crap.
The "best" part?! THEY WANT TO BREED THIS DOG!!!!!!!!
how can they BREED it when they can't even control HIM.