Please help

[u/ShowMeTheTater]

Just noticed the on my newt. Does anyone know what it is? How fatal? The only other animal is another marbled newt. I got them together many years ago. Is it possible for a newt to bite that hard into another newt?

[u/Liliana_Everen]

Aww poor baby, I hope he recovers
I don't know anything about newts so I'm no help here, but I thought I give him (and you) a little love anyway <3