What is girls aloud song dog without a bone about?

"Dog Without a Bone" by Girls Aloud is a song about a woman who is feeling unappreciated and undervalued in her relationship. She feels like she is giving everything she has to the relationship, but her partner is not reciprocating. She compares herself to a dog without a bone, feeling hungry and unsatisfied. She feels like she is barking for attention, but her partner is ignoring her. The song expresses the frustration and hurt that comes from feeling unloved and unwanted in a relationship. She feels like she is stuck in a situation where she is giving everything and getting nothing in return, like a dog waiting for a bone that will never come.