Nearly everything distinctive about Armaja is a weapon of some kind: twin spikes, a bony frill, a protective hump, and a bite whose real damage lands long after the fact.
Biology
Armaja has a dusky green body, but the parts to watch out for are brown: twin spikes on both its tail and its head that can easily skewer a meal, an opponent, or a passing nuisance.
Armaja has a mysterious hump on its back that looks like a cluster of hard, round turtle shells. The older the Armaja, the more lumps in the hump. Nobody knows exactly what it is for, though it does help protect the spine from serious injury. Rumor says it stores excess energy from a heavy meal to be spent later, but that has never been confirmed. Armaja also carries a bony frill like a triceratops, and each frill has a unique shape and arrangement of points, which is how they tell one another apart.
The earth tones of its hide might suggest a vegetarian, but Armaja is strictly carnivorous and has a voracious appetite. Sharp canines slice through skin and muscle, and rows of teeth in its cheeks grind up the bones. Deadlier than the spikes or even the teeth is its saliva, which carries enzymes that slow the metabolism of whatever it bites and leave the victim sluggish and slow-moving.
Armaja usually bites and lets go rather than finishing a kill outright, which gives its prey time to fatten up and makes them easy to collect later. It likes to eat in ravenous bursts, often devouring a whole carcass at once.
Males and females both lock horns competing for mates, often taking deep injuries in the process. Most Armaja hides carry the scars of many healed stab wounds from those not-so-friendly contests.