I read this book in a couple brief sittings, which gives credit to Barton's ability to grab the reader's attention. Unfortunately, there is no joy in following the unsympathetic protagonist through the multilayered story arc. This book was a combination of a more cynical "Have Spacesuit, Will Travel" (without any of Heinlein's skill at conveying the happiness of wish fulfillment) and "Grass" (without Tepper's meticulous crafting of why the complex alien ecosystem is so important to the plot).
The aspect of the book that I found most disturbing was that even the Wolfen (I almost wrote Foxen.. the similarities to Grass simply cannot be coincidental!) have personalities far more complex than the shallow two-dimensional women early in the book. After following the sexually fixated protagonist through the plot, I was certain that the course of "enlightenment" would address his pathetically misogynistic side, but instead, we get taken towards a simplistic ecological resolution. What an opportunity missed! If nothing else, the Dollies et al could have been used to turn the book into a splendid morality play, but instead, the protagonist continues thinking with his genitalia right to the end.
I'd like to think that the author wanted us to contemplate the inherent conflict between many basic biological needs (i.e. food, sex) and ethics. He did an excellent job setting up the issues. I was prepared for him to knock 'em down. Because he didn't, and went for a simplistic Noah's Ark conclusion, the issues remain unaddressed, and all that remains is a nagging paranoia that the author actually does just view women as sex objects. I don't need a book to "lay it all out", but man, ya gotta at least tie it up neatly!