Right, but when you don't know the dog's breed (i.e. it's 17 types of cross-breeds) nor its history (if it's gonna have PTSD from being abused or fighting for its life in the streets), it's a much safer bet to get a purebred or simple/common cross of 2 breeds where you can Google the general behaviours of those types of dogs, and you know its entire history of life up to that point: being born, then laying around with its siblings and mom