No reselling or giving away dinos from this line, please!
 
Carc-blocked? I got you. 
This is the final dino of Ark 1, and Wildcard pulled out all the stops. They may look like spikey Gigas, but they are so much more!
 
With each dino they kill, their "bloodlust meter" goes up [Red icon to the left of the hotbar]. More bloodlust = more damage output, less stamina drain, higher speed. Bloodlust caps at 100.
Press "c" to unleash a "courage roar" similar to the Yutyrannus. Ally roar boost is proportional to the bloodlust meter. More kills = greater boost. Note that your bloodlust meter will reset to 0 when you roar. 
Each bite gives your enemies the "shredded" debuff, which decreases their ability to heal.
Also their health regen upon eating their kills is unreal!