Aww...how exciting. I'm already thinking about getting Kobi a sib because I think he would like someone to play with...he's only 5 1/2 months. For a B name.....Blake, Booker, Bowie, Byron...just a few on a list I found that I liked...
Here's a link for "B" dog name ideas...maybe it'll help you out
Good luck!!
http://petrix.com/dognames/b.html