:yes: True enough
Had 3,all x racer's, ignorant in the field, none would cross a ditch or fence or go through a gate, all pulled up at ditch while running rabbits, the last one done it for me, my terrier bolted a rabbit out of a break and I slipped, he ran up and whipped up the terrier, nearly killed her, he ran no more after that.
Maybe as briddod says, bring them on from pups, but i'd never keep one in my kennel again.