Hender's rats (Rodentocaris hendersi) are large carnivorous stomatopods native to Hender's Island. They are jungle animals which prey on most other Hender's Island fauna.
Hender's rats resemble mammalian mantis shrimp, with a fur-like integument and 8 legs. Along with their limbs, they have a 'catapult tail' which acts as yet another limb.
Hender's rats have copper-based blood, which is useful for delivering oxygen to the muscles.
Like the vast majority of Hender's Island fauna, Hender's rats are pure carnivores which will eat any sort of meat, including each other. In fact, it also killed a mongoose which had been fed to it as an experiment.