Summary from the Publisher...
Funny, quirky, and wonderfully informative, the book comprises letters from all creatures worried about their bizarre sex lives to the wise Dr. Tatiana (a.k.a. Olivia Judson), the only sex columnist in creation with a prodigious knowledge of evolutionary biology. Fusing natural history with advice to the lovelorn, blending wit and rigor, she is able to reassure her anxious correspondents that although the acts they describe might sound appalling and unnatural, they are actually perfectly normal -- so long as you are not a human. In the process, she explains the science behind it all, from Darwin's theory of sexual selection to why sexual reproduction exists in the first place, and, applying the standards of the human world to the mating habits of the natural one, in the end she reveals the wonders of both.
Taken from: http://www.erin.utoronto.ca/~w3bio152/