AAARGH!!! Slip a note under the crazy cat mans door. ?
You can say he needs medication.....
My cat Fluffy, who is a himalayan, just up and moved across the street two years ago. She just decided one day she wanted to split, and now she lives under my neighbors house, and basically, is my neighbor's cat. I still see her and buy her food, but she just prefers it there....Its weird because my neighbor is odd and sad and lonely and just loves fluffy so much, its like they need each other or something......
Sometimes, they just up and leave, and live a good long life elsewhere. My friend Diane shared a cat with someone for years. The cat would disappear, and then return, looking fat and well fed, etc. after a couple of weeks. Or it would be gone all night, too. A big persian like yours.... Once it came back with a different collar with a phone number one it. Diane called and said, hi thats my cat....the other lady said, well, hey, it sleeps in my bedroom, LOL.
If somehow Mr. W. doesnt make it back before you leave, do leave a note for the new residents, if there are any, to watch for him, and perhaps make arrangements with a friend who could be called in this case.
Whiskers still leaves for two or three weeks at a time. I live in a rural area and he always comes back looking fine and well fed.
Cats are so odd.