One of the characters in my WIP is fascinated by insects, and knows all manner of trivia about them. I was telling some of this trivia to my dad today, and he pressed Snail, by Peter Williams into my hand. And I'm sure you don't think a book about snails could ever be interesting, but let me share the first paragraph with you, and we'll see if you change your mind.
So attached was the author Patricia Highsmith to snails that they became her constant travelling companions. Secreted in a large handbag or, in the case of travel abroad, carefully positioned under each breast, they provided her with comfort and companionship in what she perceived to be a hostile world.

It just gets better from there.