I live in Chile. I have a cactus that was in good health but for a few weeks it has been bad. I don't know what's wrong with it. I wonder if a cat peed on it. I don't know what to do about it. I'm wondering if it's better to cut off the parts that are still healthy and let the central part die or if it's still salvageable. Does anyone have any advice?
Thank you very much for your help,