Spotted hyena clans flip the script on mammalian power: here, dominance is inherited, alliances matter most and females rule every level of society.

Springfield’s Pat Casey aims to climb bare‑knuckle rankings, as he prepares for a March 28 co‑main event at Mohegan Sun.

Tarantulas and scorpions are not likely to encounter each other, so what happens if they do? Read here to learn about their rare fights.