Is this shell rot?

[Sam.eye.yem]

This spot on Oswald's belly is concerning me. Is it shell rot? Fungus? Never seen this before.

 

[Blakem]

If that's a leopard, it looks normal to me.

 

[Levi the Leopard]

I see the spot where the yolk sac was. Looks normal to me.

 

[Yvonne G]

That's his umbilical scar.

 

[ZEROPILOT]

No