are you using the haltis correctly,ive walked 6 dogs,danes,bernards and mastiffs on my own with these,all had to be taught by me and none were pups,you need to have a double hooked training lead,clip one end on the halti and the other on the collar,when they go to pull use the halti end to redirect the head,dont let them get in the habit of pulling on the halti its a nightmare to correct

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ALL THE WORLD NEEDS A TIDDLY PUP