Well, I am surprised at the post of people who don't believe familiars get awareness checks. I checked through the errata and FAQ and could find nothing to reference whether they should or shouldn't. I am surprised at the SRD and the idea of using ONE listen check for a group. I would not play in a campaign that used that rule. It doesn't even make real world sense. I suppose limiting familiar and PCs awareness is a DM tool to surprise the characters, but I firmly believe that skill points invested should be allowed and ANYONE (or anything) who can spot or listen should be allowed to.