[i've got 2 saluki pups at 7 months. I walk/exercise them with a 14 mth old saluki bull greyhound who was hyperactive when we first got her. She used to chase sheep until I put a shock collar on her. The improvement was dramatic, it was only used for this twice. The pups now follow her lead. The dogs are very sensitive to shouting and will not accept punishment, if you do this they may not come back, you have to stay really calm. Try taking the pup for a walk and putting her on and off the lead repeatedly with plenty of praise, it may be that she associates the lead with the end of iits walk.