Why does my dog pull on the lead? Why have I put up with it for so long? Is there a "quick fix"? Perhaps I should have gone to training classes ages ago!

So just what is a ruined dog, and how would you know if you had one? A dog can be ruined for a number of reasons - lack of socialising during the first 12 weeks of life; lack of training in the first 6 months of life; and lack of guidelines and boundaries are just a few of the ways in which humans ruin canines.