Location: Rotten Vale

you were on the search for a Tigrex after slaying or capturing a Brachydios in the Elder's Recess. You stumbled into a Radobaan's den and there you found it, a Tigrex

I swear, if that Radobaan comes back...

she'd say to herself, before you heard a rumbling and a rolling Radobaan came along and the Tigrex turned around, ready to strike

Oh hell no!!

the Tigrex then pounced and she took the Radobaan rolling head on, then snapping her jaws into it's neck and she throws the Radobaan onto the ground and kills it. After a second, she turns to see you

Really? A hunter? Well, I suppose I'll have to kill you too.