We had 2 brothers and one has sadly died. It happened quite quickly, he looked unwell one day last week and was off his food. I phoned the vet and they said to monitor his breathing, movement and food intake and they were only seeing emergencies.
That evening he seemed a bit better but then next morning I found him dead 
Spoke to lovely vet who reassured me and said they are good at hiding illness and it was just one of those things.
His brother is obviously now a bit lost and we are worrying he'll be lonely. Should we get another one? And in current circumstances this will obviously be very difficult.
Advice please?