Out walking in the park yesterday and dog went totally hyper splashing in the flooded river. We then took him into a walled garden area and he took a running jump at a wall and vaulted it, without realising there was an 8-foot drop the other side of it! He landed in an empty flowerbed, shook himself off and carried on running. I cannot believe he hasn't done himself some damage but seems perfectly fine, not limping or anything.
Is there anything I should be doing? Could he have done some unseen damage to ligaments/joints?
He's a 20 month-old cockapoo, about the size of a springer spaniel, just to put that 8 feet into perspective.