This is a strange story, very short, which many readers will read through in a couple of hours or so as I did. It describes an obsession, or a love affair, depending which way you look at it, between a gentleman of an age where he is approaching retirement and a donkey called Caroline. When they meet it is a case of love at first sight, at least on the part of the gentleman. More difficult to define on Caroline's side as she is ever an enigmatic if extremely intelligent beast.
Caroline gradually becomes an integral part of the family's lives, although there is a little resentment on the part of the wife and son since the man is spending the greater part of his waking hours either in Caroline's company or in researching donkeys. Indeed his research notes crop up from time to time in the book. Under the circumstances his family are tolerant in the extreme. Within this story there is an almost seamless transition from Caroline behaving as we expect donkeys to behave and exhibiting behaviour that is not expected.
It is an interesting story, though I said at the outset, certainly rather strange. Hardly a page turner, the end leaves the reader with unresolved questions. Extremely humorous in places and poignant in others, but I am not sure it worked for me as well as I was expecting it to.