Just finished The Genius of Dogs: How Dogs Are Smarter than You Think an excellent and thoroughly readable work by animal cognition researchers Brian Hare and Vanessa Woods -- recommended to anyone who likes dogs.
Also, on the lighter and darker side, just finished The Prisoner of Heaven, Carlos Ruiz Zafon's sequel to both The Shadow of the Wind and The Angel's Game -- shorter than the others, and that is a pity, but excellent all the same.
Now concentrating on Ronald Hutton's The Druids -- tedious sentence structures but very interesting.