虽然钉状龙比它的近亲剑龙要小很多，但它的自卫能力要强大得多。实际上，在相同吨位的情况下，它有可能不仅是剑龙目下的冠军，在近战攻击的能力上，它总体也是岛上最强的食草恐龙。 由于它尖锐的防御性刺，任何攻击钉状龙的生物都很可能会受到反伤，并且它在攻击模式时还能刺穿最厚的毛皮和盔甲。我曾目睹钉状龙用这种穿刺能力一击杀死比它大得多的捕食者！ 低估钉状龙可能是一个致命的错误，尤其当它们成群在一起时。当钉状龙在一起行动时，它们似乎会变得更加好战，并增加它们保护领地的警戒范围。
Common name: Kentrosaurus
Species: Kentrosaurus aethiopicus
Time: Late Jurassic
While Kentrosaurus aethiopicus is considerably smaller than its close relative, Stegosaurus regium, it is much more formidable in matters of self-defense. In fact, it is arguably the pound for pound champion of not only the Stegosaurus, but when encountered in close-knit fighting packs, ranks atop the Island's herbivorous dinosaurs in general. Thanks to its wickedly sharp defensive spikes, any creature that attacks Kentrosaurus is likely to be reversely wounded in turn, and it is capable of piercing even the thickest of hides and armors when it goes on the offensive. I have personally witnessed the Kentrosaurus fell much larger predators in a single such "impaling" maneuver! Underestimating Kentrosaurus can be a fatal mistake, particularly when it is in a herd. When travelling in numbers, Kentrosaurus seems to grow much more aggressive, increasing the range at which it will defend its territory.
Survivors have seen little success in their attempts to ride Kentrosaurus, owing to its spikes and hot-headed temperament. However, a tamed herd of Kentrosaurus can effectively defend a compound and take on larger carnivores. Once impaled by its attack, the Kentrosaurus slams the attacker on the ground continuously, helping to turn the tide of a pitched battle!