Does anyone recognise this dog?

This friendly little dog seems to love coming to school!! He has been found in the school on a few occasions. This morning he made it onto the corridors!! He was also in the back yard of the school last week (no children were playing at the time). As you all know there is a policy of no dogs in the school or school grounds for the obvious reasons! There are some children in the school terrified of dogs and as we all know even the friendliest dog can nip if they feel threatened. Can the person who owns this dog please ensure he’s on a lead, or if any of you know the person who owns the dog can you make them aware of the situation. Please inform a member of staff if you see the dog gaining access to the school in the mornings through the side gate. Many thanks for your co-operation on this.