we have had alot of rain and there is alot more grass that what there was, but he doesnt appear to have an avesion to the grass, as he still runs all over the backyard when we play fetch and tug of war etc.
But, a couple of weeks ago, we did have rain for a week solid, and the ground was VERY wet, and he did do a couple under the pergola then, but over near the very edge. Perhaps its developed into a habit from that. But how to stop it. perhaps seeking advice from the vet is the best way to go..and the spray too, as I dont like to spank him.
Thankyou all for your suggestions, you have been very helpful