Looking for the Title of a science fiction book about people who were small in stature and live underground in tunnels. They fear and fight rats and live off eating worms It has been a while and I may be forgetting things. Can anyone help?
Might be The Hero of Downways by Michael G Coney. It certainly features people who have been genetically engineered to be very small, and live in tunnels. The Hero of the title became a hero by killing a rat (called the Daggertooth). I can't find any reference to them eating worms without actually reading the book.