Kerry Blue Terriers

Can any one give us advice on what to do when shes in the car and sees another dog, she loves to go for car rides, and is not put in a crate, when she sees another dog either in a vechile or outside, she goes into like a attack state of mind, weve tried a pinch collar, but when you pull on the leash to tighten it up she swings her head around and bits you, same with her collar if you try to hold on to that to restrain her she swings her head around and bites you. Thanks John