The Miniature Schnauzer came out of Germany in the late 1800s, where farmers shrank the Standard Schnauzer into a quick ratter and watchdog. The square, sturdy build, bushy eyebrows and beard are unmistakable, and the wiry double coat comes in salt and pepper, black and silver, or solid black. It sheds very little, but it does need clipping or hand-stripping every several weeks.
In Dallas, that terrier alertness plays out on porches and balconies, where many Minis bark at every passing neighbor. They're smart and people-oriented, though some are stubborn, and they chase squirrels with real determination. Daily walks and play are enough for most, and a lower-fat diet matters because the breed is prone to pancreatitis. Each dog differs, so watch how a particular dog behaves rather than assuming.