We did not buy a cat.
We did not adopt a cat.
She just showed up one day and decided she would live here............Now, Feed me!............
We are in the same boat. The cat showed up on our back porch about two years ago. Now it owns the place. When it arrived, it was normal sized. Now it weighs 17 pounds and keeps getting bigger. In many ways acts more like a kitty shaped dog. It attacks and chases off racoons and other critters that try to move on what it considers his space.
So does ours!
She will follow me around the yard like a dog, occasinally chase a chicken................