my pals uncle PP passed and left him 2 young oxcroft bred dogs 1 bitch and her litter brother,we used Tyson over the bitch Bramble and had a litter of 9..the dogs were all hard as f**k,fly into anything you put in front of them from around 11months onwards,reckless,finished by their second seasons,the bitches were small,more steady ,I believe there's still a few old boys round my way,that still have stuff down from him..to what extent they been worked,I couldn't say...the ones we had out of him were bonkers,you didn't have to wait 18 months for them to show an interest