@wakeupkitty said that I could be the black one, but, wait, not like the both of you, I have no ball. (Sounds a little weird).

But when I took more times observing the picture, I came to think that maybe the black one had swallowed it, look at its belly. 😅 And maybe there are two balls inside. Made me wonder, who could be the 4th cat, is it steemcurator01? 😅