AZ, it was in a far more serious vein than The Zombie Survival Guide, but I really, really liked it.
I found it chilling and sad, yet hopeful.
There are some tongue-in-cheek moments, especially with the acronyms (LaMOE = Last Man On Earth types who like the zombie apocalypse just fine, thank you).
F-Lions are large ubercats that survived when the world fell apart. In the book they're described as "part mountain lion, part ice age saber****", or the possible offspring of surviving cats who had to adapt by getting bigger and meaner than their predecessors.
And what Buzz Knox said, too.