* Rossettes are the markings on a leopard's fur, not its skin. They are circular patterns with a central spot surrounded by a ring of smaller spots.
* Skin refers to the outer layer of an animal's body, and it's not something that would be described as having rossettes.
So, the term "leopards with rossets skin" is not a valid description. You might be thinking of "leopards with rosettes" or "leopards with rosette patterns".