‘Our 15-week-old American Staffordshire Lola used to be a little terror. She would pull so hard on her lead that she choked herself – and refused to let go of socks, shoes and whatever else she could find. And when we tried to play with her, she would bite the entire time. But since John’s help, Lola has completely transformed. She walks on her lead like a dream, no longer jumps on the couch and hasn’t bitten us once!’