Thank you for your message. I am sorry you are having this problem.
I had the same problem you did. It seems to be more related to black cats than other cats. When I tried orange cat, I got more objects that looked like a cat (although these are not great. When I tried a "tiger" that also seemed to work.
Walking orange short-haired cat with tail raised,, profile view
So, it seems there is some sort of issue with black cats (and maybe this image). So, I created another image and tried to add a black cat.
Running black cat with tail raised
So, it seems like there is something in your image that is causing the model to have difficulty creating a black cat. Adobe should look into this issue further.