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Hyaenodon were fast and vicious dog-like carnivores that lived 30 million years ago, Late Oligocene in Mongolia.

Encounters

A Hyaenodon briefly chased Andy but he hid from it and it left. (APA: Chalicothere and Claw)

One night, two Hyaenodons were attacking a mother Paraceratherium and her calf but they were unsuccessful. (APA: Paraceratherium and Skin)

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