Hello everyone, I was just after some advice. It's not a major problem but recently my collie has changed in his behaviour. He was absolutely obsessed with playing frisbee but in the last week he has suddenly become not interested in it. He still wants to play ball in the house, but when we are out at the park. He just picks the frisbee up and runs off with it. As I said this is not a big problem but I just wondered why he had gone from absolute obsession to not that interested. He is 14 months old, un neutered.