It was such a shame for pts Spaniel, but his behaviour had got worse and worse. He bit me as I mentioned earlier, but it got to the point where if I was sitting downstairs in the evening DD had to phone me to say she was coming down so that I could take him outside.
During the hot weather if I was sitting outside and he was with me, if anyone appeared round the corner of the house (DD or DH) he wouldn't let them approach. He then bit DH quite badly and the following morning would not let him down the stairs into the kitchen.
Then one day he was inside with DH as it was very hot. I came into the kitchen to get a drink and he wouldn't let me in. I had to use a kitchen chair like a lion tamer to get to the sink. He then went to get me round the other side of the table and I had to use the chair to get into the conservatory and exit the house that way.
I think he had something neurological going on. His eyes were a bit unseeing some times and he had little interaction with people (apart from trying to savage you). I like to think he had a happy 8 months with us.