My springer has just lunged at postwoman. I had the back door open unloading shop from car, and she opened gate and he barked and snarled at her. Luckily no contact was made, not even sure he would bite but you cannot take risk. He always goes mental and barks at door whenever any posts anything.
So I'm straight to shop this afternoon to get a mailbox to put on outside of gate. I feel so guilty :(