Has anyone come across the Dryprowler?

I'm in the mausoleum of the praetor and I came across this night called the dryprowler.

They appear invulnerable, so I figured I'd just avoid it, but I wanted to see what it's weaknesses would be or how to make it vulnerable to attack.

I googled it and found nothing, then I checked Reddit and found nothing.

Has anyone come across this enemy?