I enjoyed reading it. I think that a lot of her info on animals is scientifically flawed, particularly when it comes to dogs (not her forte by any means)... she's a big proponent of the hybrid vigor theory on dog breeding which I found a little tough to swallow. But her observations (as opposed to the faulty facts she injects into the narrative) are fascinating and insightful.
I've been working on it for months now...it's a heavy read and I just can't seem to sit down long enough to really concentrate on it. It is very thought provoking though, and so far has provided some interesting perspectives.