My big line bred collie cross has loads of none ped in there the person that breeds them don’t get no little whippet things pop up because there tight bred i pup my bitch to a bedlington greyhound and had a variety of size An builds,coats pop up out of both litters I had one you’d put money on was a none ped I think if you tight breed it can be controlled but the minute you out cross to none related blood that’s when various pops up