rolo cocks his leg as high as he can, pees, whips round and does it again from the other direction ,trying to aim as high as he can. I think its so another dog coming along that sniffs it up there thinks hes big and tough so stay off his territory cos a BIG dog lives there not little Rolo!!
maybe the terriers the same, a touch of dog psychology!! Rolo often does a poo high up on a tuffet or on heather as well ? big dog theory again?