1.   A good companion dog.

2.   They have also been used as guide dogs for the blind, bomb- and drug-detection dogs and companion dogs for the disabled.

3.   When she reported to work, she had a canine companion dog with her and indicated it was medically necessary.

4.   Dr. John Butchart, a staff psychologist at the Veterans Administration Hospital in Baltimore, thought a companion dog would be good for her.