...Get thissen a Yorkshire Terrier (Terrorist)lovable little buggers,feisty and energetic, noisy guard dogs (they won't let anybody in the house without dangling off their trouser legs first!)
small enough carry around if you need to,don't do masses of excrement that take a snow shovel to pick up on walks, AND, they don't shed hair all over the place and make your front room look like the underside of a barbers chair!