Some women is trying to sell her staffy x lab puppy on a pets for sale Facebook page. She then states that it has no papers? Well durr it's a cross! Then another is trying to sell her "pedigree" yorkie puppy, then says dad is kc reg and mum isn't. I may be stupid, but how can u tell if it's defo ped without seeing kc reg papers from mum and dad and pup?