Keeshonden) is a medium-sized dog with a plush, two-layer coat of silver and black fur with a ruff and a curled tail. It originated in Holland, and its closest relatives are the German spitzes such as the Großspitz (Large Spitz), Mittelspitz (Medium Spitz), Kleinspitz (Miniature Spitz), Zwergspitz (Dwarf-Spitz) or Pomeranian. Keeshonden tend to be very playful, with quick reflexes and strong jumping ability. They are thoughtful, eager to please and very quick learners, which means they are also quick to learn things their humans did not intend to teach them. However, Keeshonden make excellent agility and obedience dogs. In fact, so amenable to proper training is this bright, sturdy dog that they have been successfully trained to serve as guide dogs for the blind; only their lack of size has prevented them from being more widely used in this role. Keeshonden want to please, so harsh punishment is not necessary when the dog does not obey as quickly as desired.