what a turnaround!!!

Yesterday we were feeling things were looking up for us and then just before bedtime.....Xander came indoors, limping, holding his RIGHT back leg up and bleeding a little. Since his LEFT back leg is already 'bionic' with plastic cruciate ligaments etc, we are already suspicious about what he has done this time! Poor thing was bleeding from a front paw, but I think that was not so bad as the back leg, which he cannot put to the ground etc. He has spent the night with a hot water bottle on the armchair, and when the clock strikes 8.30am I will call our vet. He hasn't eaten or drunk any water and only wants to sleep. His leg doesn't seem to be swollen from what we can make out, but he won't move it or let us really look too closely of course. Peter thinks he has got night blindness, as we think he cannot see what he is doing out there.....if that is something cats can suffer from? He must have got caught and jumped maybe...we never knew the cause last year and I don't suppose we will know this time either.................it is ironic that since we have been in this situation already, the panic is less: we have a great vet, we know roughly what to expect when we go there this morning, and we have faith that it will be ok. Last time, it was sheer terror, worrying about what he had done, who would help us, where should we go etc, would he be ok with an operation etc. It doesn't necessarily mean a thing; we have no idea what is wrong, but I do feel ok about going to the vet and finding out. I cannot beaar the thought of anything awful happening to Xander so I am focussing on the fact that we need to take action and get answers first and foremost. Wish him luck!!!!