Which Herbivore Dinosaurs Were the Most Dangerous?

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Which Herbivore Dinosaurs Were the Most Dangerous?

We don’t usually equate plant-eating animals with danger since these creatures aren’t inherently violent, unlike carnivores. However, this doesn’t mean herbivores can’t create dangers. Modern examples, such as rhinos, are quite docile unless they have a reason to react violently to a situation such as protecting themselves from a perceived threat. Dinosaurs were no different, and many had forms of defense that could seriously injure the beast hunting them. Delve into which herbivore dinosaurs were the most dangerous!


The Brachiosaurus was among the largest plant-eating dinosaurs and could become hazardous for several reasons. Scientists suspect that this dinosaur would swing its whip-like tail at around 69 miles per hour if provoked. A single hit from that speed could leave a hunter reeling in pain.

Moreover, the Brachiosaurus was massive and could crush whatever it walked on. Their mass could threaten smaller dinosaurs in the area, especially if they got in the Brachiosaurus’s path. Luckily for our small carnivores, a Brachiosaurus was relatively slow-moving, so getting trampled by one was unlikely.


While herbivores are massive, others were born with natural armor covering their entire body. The Ankylosaurus lived in the Late Cretaceous Period in the region that we now know as North America. These dinosaurs had thick skin and bony plates lining their whole back. What made this creature deadly prey was its club-shaped tail. The Ankylosaurs couldn’t swing their tail as fast as a Brachiosaurus but a hit from this dinosaur could still do a great deal of damage.


Like the well-known Triceratops, the Pentaceratops was a member of the Ceratopsian family; however, this dinosaur had five horns, hence the “pent” prefix of its name. These horns were just above the eyes and on the nose and cheekbones. Like a rhino, these horns could leave the attacking dinosaur with lethal injuries if the Pentaceratops charged the predator.


Most experts in the dinosaur community consider the Stegosaurus unintelligent, especially when compared to the beasts that hunted it. Despite this, the Stegosaurus was brawny, with large plates lining its spine. More importantly, the Stegosaurus had four spikes at the end of its tail. Like the Ankylosaurus’s tail, you wouldn’t want to take a hit from it as that spikey tail could leave lethal wounds.

Did Herbivores Attack?

It’s easy to confuse danger with aggression when explaining which herbivore dinosaurs were the most dangerous. Remember, plant-eating animals don’t normally go out of their way to start a fight. These dinosaurs likely only became aggressive, and, therefore, dangerous, when they felt threatened or had to defend their territory.

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