Okay so far our hints are:
#1 - Our buddy's name (furbaby's name and/or Mommy's screen name) begins with the same letter as his/her place of residence (country/state/province/city)
#2 - Our buddy posted in this thread:
http://www.yorkietalk.com/forums/showthread.php?t=85148 
#3 - It's a girl!
#4 - Our buddy is different than
most of the other furkids of the same gender.
New hint:
#5 - Our buddy is older and bigger than Chloe! Although, that probably only knocks out a couple lol