1. The Exercise Solution. Leash-tugging is often the function of too much energy. Exercise your dog (hard) before his walk and you’ll have a far less grabby walking companion. If you don’t have a backyard for ball- or disc-chasing (perhaps why you’re leash-walking him in the first place!), play ball in a long hallway, play “Find it” for hidden treats throughout the house, stand at the top of the stairs (anti-slip runners on the stairs, please), toss a treat to the bottom, call him back to you, toss another treat …
2. The Incompatible-Behavior Solution. If it’s your dog’s morning wake-up bathroom break and you can’t exercise him in the house first because he has to poop and pee, grab your highest-value treats on your way out the door and start reinforcing for polite leash walking. He can’t look at you in happy anticipation of the next bit of chicken and grab his leash at the same time. And/or carry a favorite non-leash tug toy in your pocket, and invite your dog to tug on it instead. Tugging on a toy is incompatible with tugging on a leash; he can’t do both at the same time.
More about this topic here - http://www.whole-dog-journal.com/issues/18_7/features/Five-Things-to-do-When-Your-Dog-Grabs-the-Leash_21255-1.html
2. The Incompatible-Behavior Solution. If it’s your dog’s morning wake-up bathroom break and you can’t exercise him in the house first because he has to poop and pee, grab your highest-value treats on your way out the door and start reinforcing for polite leash walking. He can’t look at you in happy anticipation of the next bit of chicken and grab his leash at the same time. And/or carry a favorite non-leash tug toy in your pocket, and invite your dog to tug on it instead. Tugging on a toy is incompatible with tugging on a leash; he can’t do both at the same time.
More about this topic here - http://www.whole-dog-journal.com/issues/18_7/features/Five-Things-to-do-When-Your-Dog-Grabs-the-Leash_21255-1.html