I'll paraphrase the flavor text from each of the images in case you prefer viewing from afar:
The Flaming Coward has an extraordinarily high metabolism. The heat generated by it’s numerous spinal stomachs makes the creature semi bouyant, allowing for swift and nimble hunting. It’s head and lower body is thick skinned to withstand attacks and it’s own body heat.
The Flaming Coward will fight potential prey ferociously, unless it’s stomachs are struck or wounded. Fearing further harm to the most delicate part of it’s body, the Coward will vomit forth the contents of it’s heated stomachs, releasing a great deal of molten matter. With luck, the foe will be too busy trying to douse the surrounding flames to notice the Coward’s retreat.
More or less, it's nimble, bitey, and pukes when it's scared. Yessss.