Hi. I have a 5 year old border collie cross. My family and I suspect he has a bit of whippet in him. I got him from the humane soiety when he was 3. I am doing obediance but I cannot keep his attention very well. I tried using trearts but when he is focusing on somthing else he does not focus on me. He ignores me.Can you please help me with finding ways to get his attention and keeping it when i work with him.