THATS WHAT I STARED TO DO USED A 10M LEAD, SHOUT HER CAME BACK NO PROBLEM IT JUST SEEM TO BE WHEN SHE QUITE FAR AWAY JUST PUT IT DOWN TO EXCITMENT AS SHE IS DYING TO RUN SUM THING SHE HAD A MIXY RABBIT FEW WEEKS AGO AND KILLED A SQURRIEL 2DAYS AGO,THINK I WALK HER ON HER OWN FOR A FEW WEEKS BUT SHE FINE WHEN SHE ON HER OWN BUT SHE WORTH IT IN THE END THANKS KRIS