A tyrranax is a bipedal dinosaur-like creature, similar to a Tyrannosaurus. The front limbs of the Tyrranax typically have a single scythelike appendage, though some have an actual articulated claw with one downturned blade.

Hunger seized the tyrranax, and the Sylvok's vision quest ended in disaster.

It outnumbers you one to many.

Alpha Tyrranax, Spread the Sickness