Primal ultralisk

Primal ultralisks are primal zerg lifeforms similar to ultralisks.

Appearance
They look drastically different from their Zerg Swarm counterparts, being significantly smaller, possessing lower health, and lacking the large shield-like carapace above a normal ultralisk's head. They also attack differently, as their kaiser blades, instead of being mounted to their backs, are attached to their front legs in the form of large, retractable claws. They also look more similar to ravasaurs, Brakk and Tyrannozor.

History
The primal ultralisks first appeared during the first engagement on Zerus, as part of Brakk's pack. Later they appeared as part of Dehaka, Yagdra, Slivan and Zurvan's packs.

During Kerrigan's invasion of Korhal, several primal ultralisks assisted Dehaka in disabling Mengsk's Psi Destroyer. Primal ultralisks also participated in the final assault on Augustgrad.

Trivia

 * The primal ultralisk uses the same base model as the primal zergling, tyrannozor, ravasaur, and Brakk.