It's his favourite game. Bark at the ball until it comes back or - and much more likely - Mum gets fed up of the barking and fishes it out. After which he takes it and sits and chews it for a while before dropping it in the pool again. And again.
* * * * * * * *
I have now written to the Prime Minister, and copied my letter to the Conservative Party, my local MP (Labour), and Keir Starmer (leader of the Labour Party).
I will, no doubt, get a standard reply but at least I've said something.