We have had our new female kitten for just over a month now, and she was super confident from day 1. Our existing cat has always been scared of lots of things, but his reaction has been even more extreme than I was predicting. He basically lives upstairs under a bed, and only comes out at night when he knows the kitten will be shut away. We have tried to introduce them with supervision, to show him that she doesn't pose any kind of threat, but he looks permanently terrified and runs away as soon as he can. Will this situation ever improve? Does anyone have any suggestions of what we can try in the mean time? It is making me quite sad, and taking the enjoyment away from having the new kitten (who is delightful). All advice welcome!