Ink drop: The ink drop refers to the back of his ear, because there is not much gray, it is like the ink just dripped into it. The ink droplets are easy to remember, and the cat doesn’t need to have a complicated name. This name is just fine.
Actually, there is a deeper meaning. I generally don’t like the one-level meaning anymore. Even though there are a few drops of ink in the stomach, the finger still has some texture.