Bernese Mountain Dogs come from the Swiss canton of Bern, where farmers used them to pull milk and cheese carts, drive cattle and guard the farmyard. They're the only long-coated Sennenhund breed, with a jet-black coat, rust markings, a white blaze and an inverted white cross on the chest. Most weigh 70 to 115 pounds.
Berners are usually gentle, affectionate and eager to please, though some are reserved with strangers. That calm streak suits rowhouse life and neighborhood strolls in DC, but their size and shedding take planning. Lifespans run shorter than average, roughly 7 to 10 years, largely because of cancer, so adopters should be ready for veterinary costs. Early training matters, since a pulling adult is hard to handle on a busy sidewalk.