A dog can protect their human.
A dog can keep their human warm on a winter night.
A dog can be a loving irritant to help their human's character grow.
A dog can give their human family to love.
A dog can provide their human with someone to be responsible for and to take care of.
A dog can give friendship and love.
A dog is family.
A dog can be a reason to quit drugs or alcohol.
A dog can be a reason to control one's anger.
A dog can be a focus to develop love and compassion.
Support the homeless with pets. It is good for the homeless. It is good for the community.