I don't know anyone that would use a Bull for running?
They don't do bad on the treadmill when being brought on.
I'm not saying they don't but ANYONE who breeds Bull for stamina when it comes to breeding lurchers want to stick to breeding toy dogs,I've a Pom here that does a 100 miles a week on the Fells,it's nearly 11,I've NEVER EVER seen it knackered yet I'd not class it as worth breeding off regarding stamina lol..Anyways to the deer
Or if it learned to take a throat hold you would be on a winner .......A throat hold is great with the smaller species but on the bigger types tha