Ah, Sweet Mystery of Life (published in 1989) is a collection of seven of Dahl's previously-published short stories.
"Ah Sweet Mystery of Life"
"Ah Sweet Mystery of Life" tells the strange story of a mating gone wrong. In the story, a cow is taken by a master breeder called Mr. Rummins to be mated with a so-called "prime bull." But he runs into trouble: the cow is a bit rowdy.
"Rummins"
"Rummins" tells the story of the aforementioned breeder called Mr. Rummins, who also enjoys killing rats, something which his neighbors ask him to do. Rummins quickly obliges, but runs into a fair amount of trouble when trying to do so.
