998e2bac_n_of_No_Pull_Dog_Training_Aids__2
[0] Head Collars or Head Halters [1] Premier Gentle Leader Comfort Trainer Head Halter Halti Snoot Loop Canny Collar NewTrix [3] Best for very strong pullers and aggressive dogs since it gives trainer control of the head. [4] Takes some training for most dogs to get comfortable wearing it. It seems possible that a dog could strain his neck if he were to pull into a head collar very hard. (We recommend using head collars with no longer than a 6 foot leash). [5] 8 out of 10 for the Premier and Comfort Trainer [2] 
Since the leash is attached to the dog's nose, when the dog pulls, it turns his head back toward you similar to the way a horse's halter would. Some head halters attach to the back of the dog's head such as the Canny collar. In our testing, we found attachment at the back of the head to be less effective at detering pulling, but some people like that they do not cause the dog's spine to curve at all.
Comparison of No-Pull Dog Training Aids
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