Why do Dogs Chase Pant Legs?
An owner of a recently rescued Maltese contacted me today desperately in need of help. Her newly acquired one-year-old dog was lunging and nipping at innocent passerbyers terrorizing them as they went about their errands. She, therefore, started to go the avoidance route; walking on secluded streets in the early morning and late evening. We discussed a variety of causes for such behavior and came to the conclusion that regardless of the cause, it was evident that her yelling and repeated leash corrections were not only not working, but perhaps even making the behavior worse. I recommended her to use a harness to protect this dog's delicate trachea which was at risk of collapsing every time he lunged and pulled against the collar in an attempt to attack and nip.
More here. .