The curious incident of the dog in the night time

We have had a our first house-related 'incident'. The driveway was just poured and was looking fantastic when a dog decided to jump the bank and check it out for himself. One builder was still on site but was unable to stop him from having a wander around the wet concrete. He did however chase the dog home to find out where he lived. Apparently the owners have been meaning to put up a fence for about four years! The builders have now tried to patch the paw prints but it has not worked that well - as shown in this pic. The builder's insurance should cover the fix up job - but it will be major as they will have to dig out all the concrete and repour the slab. It will not stop our move in but will need to be fixed soonish.