Hi we rescued a cat 3 years ago. She died this week at 18. She never went out. My 9 year old cat was never bothered about her. He was never in to be honest. Now he won't go out or won't eat or drink. Any advice please. It must be to do with our other cat but they didn't really get along. Would a vet be able to help? I'd hate to think he's ill and I didn't take him.
Thanks.