21.   A dog barks behind a curtained dressing space as a small, solidly built man slips out and positions himself in the dark.

22.   A dog barks, then another, then a few more.

23.   A dog barked vigorously from within.

24.   A dog barks in the distance, and a white pine creaks.

25.   A dog barked behind a first-floor door.

26.   A hundred yards away sits a big tent, and a dog barks at the remaining visitors.

27.   A squirrel runs up a tree, and the dog barks.

28.   But every time the man got near the goat, the dog would bark.

29.   But not every household has a dog, nor does every dog bark at intruders.

30.   Cooper heard the dog bark and turned around to find the dog growling at him.