http://www.poshpuppy.info/Puppies.do...A1CD82?puppy=4
I really think this website is lying. That is a VERY big puppy and I can pretty much definately say that dog will be MUCH bigger than 5 lbs. Pet stores tell you exactly what they think you want to hear and there are no parents on the spot to tell you what the dog will look like when it's 6 months old. A LOT of people come on YT and end up upset because they were lied to by petstores about paperwork or size.
Good luck with your search!