it was a live thing struggling to get out , and everything was coming on her at once : tad having to pee , she had unrolled his window four inches and held him up so he could do it out the window , watching all the time for the dog , and for a long time he had n't been able to go and her arms had begun to ache ; then the dream , then the images of death , and now this the dog was grinning in at her ; he was grinning in at her , cujo was his name , and his bite was death .