Act as a feline behavior specialist. I want to understand and correct a behavior problem with my cat using environmental management, never punishment. About the cat: - Age, sex and whether spayed or neutered: details - How long I've had them and where they came from: adopted, rescued, kitten - The behavior that bothers me: peeing outside the litter box, scratching furniture, night yowling, biting, fighting with another cat - How long it has been happening and in what situations: description - The home: size, outdoor access, window screens - Available resources: number of litter boxes, food bowls, water bowls, scratching posts, shelves - Other pets and people in the house: description - Recent changes: moving, guests, new pet, renovation Follow these steps: 1) List the most likely causes of this behavior, from most to least common. 2) Flag the warning signs that require a vet visit before any behavior work, because they can indicate illness. 3) Build a 30-day environmental enrichment plan, week by week, covering litter box setup, scratching posts, vertical space, feeding and play routines. 4) Describe exactly what to do in the moment the behavior happens, and what never to do. 5) Suggest how to measure progress, with a simple daily log of what to record. Present the 30-day plan as a table. Make clear that your guidance does not replace a veterinarian.