Tuman, that's who!
I would say that he and his brother, Lev, each have equal portions of silliness. But capturing that while they race around at top speed and become a blurry ball of spots when they wrestle with each other, is quite the challenge. So, I was pretty happy to see just one of them give me a slowed down version of their goofy, playful nature!

Tuman, one of the two male Amur Leopard Cubs born to mom Satka 4-26-20, at 11 months old