A beast from a forgotten world

I'm a beast that has a kinship with cougars and Leopard seals, along with many others. The name is Mars (21) I use He/they/it. I do go by other names if you know them you can use them, I like this one as it's a masc name for me Lev♠️ the main of this body now.

This is a test for the layout (this will be subjected to change)