We've got a terrier spaniel cross. He walks pretty nicely on his harness in residential areas but anywhere sniffy and he pulls like a train. We're struggling with his recall at the minute and I've stumbled into the world of gundog training. I don't want him trained as a gundog but as he has that breed in him I've been finding the YouTube videos really interesting. They all seem to wear slip leads. I was always lead to believe that they're cruel. Does anyone have any personal experience of them please? There must be a reason why they're so popular amongst this breed. Many thanks.