Alright mate... My mate had one that was bred in yorkshire mate but the dam was the whippet and the sire was the patterdale.... and can say mate that little dog was f**king super mate it was a class little lamper, ferreter, ratter, took all feather done literally hundreds of munty and would take fox for fun and he stood 19 20in tts.... but now he has just got the belly sister to his dog and lined it with his first cross heart break fell beddyxgrey.... and she just had 5 pup's i think and ill be haveing one of them as iv seen them work and can honestly they are great little worker's... Atb T