Looks like a leopard to me, just a low expression one. Major things that make me think this are the belly, the warping of the alien heads and the presence of more O's, and the pattern on the tail. My leopard has a similar tail pattern where the alien heads break down into squiggles and a back stripe.
Idk about trusting it to be het clown, but I've produced enough leos to guarantee that is a leopard. He may be "lower expression," but the coloring, tail striping, and pattern overall definitely say Leopard.