Clues:
- The Brit lives in the red house.
- The Swede keeps dogs as pets.
- The Dane drinks tea.
- Looking from in front, the green house is just to the left of the white house.
- The green house's owner drinks coffee.
- The person who smokes Pall Malls raises birds.
- The owner of the yellow house smokes Dunhill.
- The man living in the center house drinks milk.
- The Norwegian lives in the leftmost house.
- The man who smokes Blends lives next to the one who keeps cats.
- The man who keeps a horse lives next to the man who smokes Dunhill.
- The owner who smokes Bluemasters also drinks beer.
- The German smokes Prince.
- The Norwegian lives next to the blue house.
- The man who smokes Blends has a neighbor who drinks water.
Who owns the pet fish?