Board Thread:General Discussion/@comment-26025032-20150615045831/@comment-4260948-20150616115413

In their defence, Rexie HAS shown increased intelligence - and, she's different to all the others; she has FROG DNA. Only the Indominus has that - all the others are amphibian or birds.

Frogs manage to withstand a lot and are actually smart - they put their eggs in places away from predators, for example. So, Rexie probably has enough intelligence to differentiate between "MOVING TARGET! MUST EAT!" and "MOVING TARGET! FOLLOW TO MORE FOOD!"