998e2bac_n_of_No_Pull_Dog_Training_Aids__2
[0] Choke Collar or Check Collar or Training Collar [3] Dog doesn't generally mind having it put on. [4] Can constrict to a dangerous degree and cause tracheal damage. Doesn't reduce pulling very effectively. [5] 1 out of 10 [2] 
When the dog pulls, a cord or chain tightens around the dog's neck which is unpleasant and discourages him from pulling.
Comparison of No-Pull Dog Training Aids
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