Ladarg
Overview
Although this Kreature is an herbivore, it has a short temper. Males will defend their harems aggressively with hammer-like blows from their necks and tails, sometimes attacking boats which they mistake for rivals. The retractable fin on its head has a spot pattern which is unique to every individual, and how high or low the fin is raised can indicate its mood. Its skin secretes a poisonous mucous that not only protects it, but acts as a natural sunblock; if need be, it can produce copious amounts of this slime on its tail and flick it into an opponent's eyes or nostrils.
Man, quite a bit of rank a and b creatures are being added. Oh well, the more the merrier !!!
Updated Comment: Ladarg being inspired by the outdated swamp-dwelling and belly dragging sauropod dinosaur hypothesis is pure win in my book. The poisonous mucous from salamanders is a great added plus. 🙂