if its a pup cant see it going more than ten feet away from you anyway when out in a field. but make sure theres nothing about to intice it to do so, as in another dog, cattle, people ect at least till the recalls sorted. and with it pulling on the lead simple way sit it on its ass whilst saying heel! as soon as it pulls a big jerk on the lead it'll learn. thats the way i've always done it and none of mineever pulled! unless they see something furry