Lucy is a name that means “one who lightens up others’ lives.” This is a fitting name for a beloved pet because this is precisely what a dog will do for you. They are companions who help ease loneliness for singles who live alone. A dog can light up the life of practically anyone because they are real characters who become a member of the family vey quickly after their arrival. The name is often given to Boxers, Labrador Retrievers, Golden Retrivers, Yorkshire Terriers and Dachshunds. Lucy also means energetic, loving and crazy so if your dog is a cuddler, loves to run around the house and does a few zany things now and then, Lucy may be the perfect name, provided that she is a girl.