How well dog you know dog breeds?

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Across
  1. 2. historic large dog breed originating from the mountains of northern Japan.
  2. 5. They have large heads with thick folds of skin around the face and shoulders and a relatively flat face with a protruding lower jaw.
  3. 8. descended from ancient Roman dogs.
  4. 10. They're among the most popular choices for service dog work, as well as search and rescue, bomb and drug detection, and therapy dog work.
Down
  1. 1. also known as the wiener dog, badger dog, and sausage dog.
  2. 3. is one of the two largest dog breeds in the world, along with the Irish Wolfhound.
  3. 4. is an Italian breed of mastiff
  4. 6. make top-notch therapy dogs.
  5. 7. is a short-legged breed of dog in the hound family.
  6. 9. World War II almost completely wiped out this breed.