Managing a cat issue
I have three cats all about 10 years old. Within the past year one of my cats has began aggressively marking inside and outside the house. They have all been to the vet and it is not a physical issue. After talking with the vet I suspect the marking is due to increased cat pressure from felines and their owners moving in around us.
I'm at a point where I want to move the marking tabby outdoors. My challenge is that all three cats use the cat door to go in and out all day long. How do I go about keeping one out without restricting all three? So frustrated! Grr.