Firehead
this nimble creature was native to the frozen polar regions of the planet Rhinnal. Essentially an ambulatory fish, the firehead used its high body temperature to burrow into the ice. A knobby growth their upper jaw, which glowed like a bit of lava, was used to melt and scrape the ice. This knob was also used to kill the firehead's prey, and swarms of fireheads worked to gether to attack larger prey. The fireheads served as sources of both heat and food for the native Rhinnalians.