Being a big cat nerd, I have to say "melanistic leopard" instead of "black panther".
A panther can be a tiger, lion, leopard or jaguar. There is no one panther species.
Melanistic means the cat has an excess of melanin, making it black. Melanistic leopards and jaguars still have their spots, they're just harder to see. They can show up under direct sunlight.
OK that's out of the way. If you want a cool can holder, here's a dual extrusion model.
Leopard_Koozy_01.stl - the body of the holder, print in a nice background color.
Leopard_Koozy_02.stl - the leopard pattern, print in black or maybe pink if you need a pink panther.
0.3 mm layers work fine, 100% infill.
Fit is snug, so if you like a loose Koozy scale it up 1 or 2 percent.
Aramis chilling in the sun.