Ive just got Twiggy. He is a short haired Border Collie and is about 5 months old. I have been trying to play fetch with him but there are some hiccups. He chases after the ball, then when he gets to it, he sits next to it and and stares at me. Sometimes he walks a little way in my direction but then drops the ball. He comes when I call him but he leaves the ball behind. Same thing happens when I have a treat, he comes for the treat without the ball and then goes back to sitting next to the ball.
I have been going over and getting the ball, but I know this isnt the right thing to do. How do I teach him to bring it back to me?