In the past I was has a base near what i normally call "Bronto active spawn" , aka herbivores island, and to be honest these guy don't hard to kill in casual,ease difficulties, use shotgun and riffle (both are primitive version) if careful can defeat Bronto quite ease just don't kill it while it with friends, I don't know if this is just my self but, it some how has similar machanic to triceratops in that they all attacking me/you.

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