The Dalmatian is a breed of dog, noted for its white coat with either black or liver spots. Although other color variations do exist, any color markings other than black or liver are a disqualification in purebred Dalmatians. The famous spotted coat is unique to the Dalmatian breed; no other purebred dog breed features the distinctive spotted markings.
The most common colors for Dalmatians are black or liver spotted on a white background. Other spotting colors, though not permitted for showing, and rare, are blue (a blue-grayish color), orange or lemon (dark to pale yellow), brindle, mosaic, tri-colored (may appear on any other coloured spots), and two-toned.
As a result of their history as coach dogs, the breed is very active and needs plenty of exercise. They are very fast runners, with a great deal of stamina and self-reliance. Given freedom to roam the wild, they will take multi-day trips on their own across the countryside. In today's urban environment, they will not likely survive such excursions and must be contained.
Their energetic and playful nature makes them good companions for children and they have an instinctive fondness for humans and horses.
Today the Dalmatian serves as a firehouse mascot but, back in the days of horse-drawn fire carts, they provided a valuable service. Dalmatians and horses are very compatible, so the dogs were easily trained to run in front of the carriages to help clear a path and quickly guide the horses and firefighters to the fires. The dogs were sometimes also used as rescue dogs to locate victims in burning structures. Dalmatians are often considered to make good watchdogs and it is believed that Dalmatians may have been useful to fire brigades as guard dogs to protect a firehouse and its equipment. Fire engines used to be drawn by fast and powerful horses, a tempting target for thieves. So, Dalmatians were kept in the firehouse as deterrence to theft. The horses have long since gone, but the Dalmatians, by tradition, have stayed.
Taken from Wikipedia