Carnosaur

See pg 81 Warhammer Rulebook

Once a Carnosaur has inflicted a wound or casualty, it will immediately become subject to frenzy from the next close combat phase onwards. The Carnosaur will never lose its frenzy, even if it is beaten in combat.
See page 84 of the Warhammer rulebook for Frenzy.

Against Large Targets, each wound that the Carnosaur inflicts does D3 wounds rather than 1.

Kroxigors  Carnosaurs, and Stegadons have a 4+ Scaly Skin Save