Why is the dog very thin and covered in soars in there will come soft rains?

In Ray Bradbury's "There Will Come Soft Rains," the thin dog, covered in sores, symbolizes the neglect and devastation caused by the absence of human care in a post-apocalyptic world. The dog, once a beloved pet, is left to fend for itself after its owners have perished in a nuclear disaster. Its frail condition reflects the broader theme of loss and the impact of technology on life, as the automated house continues to function without any humans to care for it or the living beings around it.