I thought she didnt look herself, but couldnt put my finger on exactly what it was as her behaviour was the same as always. Took her for a check up at the vets to be on the safe side....only to be told she had 'significant mouth cancer' and that she didnt have long left. The vets were quite shocked actually at her age as the youngest they had seen that particular type of cancer was in a cat of 7 years old and that was quite young they said. They said they werent happy to dose her with pain killers either because the cancer was so bad. I cant believe our cat numbers have dropped so quickly :-(