(Commence hand-waving.)
Round 151: Dino takes a readied jump, but does not do so well this time. Dino takes 12 from the horrible sound, dying. For simplicity, we can place Hargelda at 95N100E15Z, northbound. She can breathe next round.
Round 152: A pony-sized creature with four insectlike legs, a humped body, and a tail ending in a paddle bounces into the arena at 0N115E.