Bought a patterdale a few month ago,previous let him go due to him biting,he was a family pet.But had apparently been bred out of nick stevens stuff.1st time i had him out on a call out,let the older dog mark ,let my dog have a lookand he wanted to go so i let him in,0.6,dog did really well so was suited with him.took him home to shower and bathe him,he got on couch and when i went to get him off he bit me.2nd dig 1 meter deep ,broke through to dog,tried pulling him out,and it was like trying to pull a crocodile out!! 3rd dig broke through to a pals dog,let my dog have a look dog did well pull