Beautiful pups! Unfortunately they can be easily distracted by a female "scent" or a nice piece of meat "laced up". A trick learned many years ago, work'n for the "correct" side BTW.
Sorry for your difficulties

________________________________ ,,,,,,,,,,,,,,,,,,,,,,,,,, http://www.youtube.com/watch?v=u_WXxYGyRas Noli Irritate Leones