it's a quick read, but take it slow.  enjoy it.  read it aloud to your partner when the children are in bed (sedaris likes his characters to swear, and dang if it isn't hillarious when the animals do)
it's sort of an aesop's fable, complete with illustrations (reminds me of margaret atwood's rift on fairy tales: another one to take slow).  find out which animal you are.  you're in there :)