Very much like the Grumpy Old Troll in fact, but possibly a little more territorial. Basil has all the ingredients for my perfect dog, OR SO I THOUGHT. Why does no-one stop you and say 'a terrier? Are you sure?'. Or, 'Perky ears! You deliberately chose Perky Ears?!'.
Yet for all my grumbles and 'Basil you little s#*t' (to be said in the style of Angharad from School of Comedy. For some reason the Welsh accent is just perfect for utter contempt), I still quite like him. A lot. His tolerance knows no bounds with children and the cat. Only ours mind. Any other feline is fair game.
So take care, those who choose a pet for their big feet and perky ears. You may occasionally regret it, but you'll have a lot to talk about.