What is the main conflict in A Boy and His Dog by Harlan Ellison?

The story takes place in post-apocalyptic America, where Vic and Blood (his telepathic dog) must fight to survive. The story's violence, explicit sexuality, and coarse language shock many readers, although these elements support Ellison's harsh presentation of the future world. Set in a bleak environment and carrying dark themes, it is often read as a cautionary tale about what the future may hold.