I have 3 cats. Moved to this house when I was pregnant 2 years ago. Baby is nearly 18 months old now and is noisy, mobile and according to one of my cats obviously generally a pest. The other two cats aren't bothered.
My problem is one of my cats seems to have moved out and taken up residence at a close neighbours house. He wanders in her open back door, either eats her cats food or she feeds him and then sleeps all day in the sun in her garden and she lets him in at night sometimes too.
I'm quite sad. He used to come back every day to be fed, then it got further and further apart and now I'm lucky if he pops over here at all. I've not seen him for 4 days except for sitting on her wall.
I've only spoken to the neighbour about it briefly, I said I was quite sad and that I was worried that if anything happened to him that we may not notice for days because she would think he was here and vice versa. She said the above about his time there and also said that she usually tries to get him out when she leaves the house but "He won't go" 
WWYD?