Cats are well-known for their seething, barely-concealed contempt of their human masters, but they're supremely useful in one really important way: They are excellent at killing vermin. For this we allow them to stay in our homes and eat for free and look at us with cold hatred.

Except for this cat, though, who apparently decided he couldn't even fulfill the bare minimum of the cat-human contract:

The worst part? The rat itself doesn't even care about the human in the room. The rat knows it's safe and that there is no danger coming from any direction.

Of course, a dog probably wouldn't kill the rat either, but at least it wouldn't feel so personally insulting.