A crocodilian race
The Snaptooth are some of the most tempermental swamp denizens. An "aggressive Snaptooth," then, is something special.
"I've seen them Serkan, they linger between both worlds, never really alive nor truly dead. The Murkwater in which they dwell seems to be the source of their power and it is ... quite potent" - Xulos, Undead Sage
"Thing came out of the Murkwater like lightnin' and snatched that whelp 'afore it could turn ta see what the noise was." - Harrin, Barbarian Conscript