What Was the Biggest Omnivore Dinosaur?

The world of dinosaurs was filled with fascinating creatures, some of which were the largest animals to ever walk the earth. Among these giants, a category that often sparks curiosity is that of omnivorous dinosaurs. But what exactly is an omnivore dinosaur? And more importantly, what was the biggest one? Let’s delve into this intriguing topic.

Understanding Omnivorous Dinosaurs

Omnivorous dinosaurs are those that consumed both plants and meat. This diet gave them a significant advantage in terms of survival, as they could adapt to various food sources depending on availability. It’s important to note that not all dinosaurs were strict carnivores or herbivores; many fell into the category of dinosaur omnivores.

When we think about what dinosaur is an omnivore, several names might come up. However, identifying which dinosaurs were omnivores can be a challenging task for paleontologists. The main reason for this difficulty is that evidence of diet comes primarily from fossilized teeth and stomach contents, which are rarely preserved.

Notable Omnivore Dinosaurs

Despite these challenges, several species have been identified as potential omnivores. One such example is the Yunnanosaurus, a long-necked dinosaur that lived during the Early Jurassic period. Although it had flat teeth suitable for grinding plants, some scientists believe it may have also consumed small animals or insects.

Another notable omnivore is the Deinocheirus. This dinosaur is known for its large size and unique physical features, including a humped back and massive arms with long claws. The Deinocheirus diet likely included plants, fish, and possibly small dinosaurs.

Yet, when we consider the question, “what was the biggest omnivore dinosaur?”, one name stands out among the rest – the Therizinosaurus.

The Therizinosaurus: A Giant Among Omnivores

Therizinosaurus, often considered the biggest herbivore dinosaur, is also thought to have been an omnivore. This unique dinosaur lived during the Late Cretaceous period and is known for its gigantic size and unusually long claws, which could reach up to 1 meter in length. But what makes Therizinosaurus particularly interesting is its potential omnivorous diet.

While it’s true that Therizinosaurus had a beak and teeth suitable for eating plants, some paleontologists believe that these massive creatures might have also consumed meat. This hypothesis comes from their close relation to other theropod dinosaurs, many of which were carnivores. So, the question “is Therizinosaurus an omnivore?” is still open to debate, but it’s certainly a possibility.


In conclusion, while the world of dinosaurs is dominated by tales of colossal carnivores and enormous herbivores, the role of omnivores should not be overlooked. These adaptable creatures, capable of consuming both plants and meat, represent a fascinating chapter in prehistoric life. From the Yunnanosaurus and Deinocheirus to the giant Therizinosaurus, these dinosaur omnivores showcase the incredible diversity and adaptability of life during the Mesozoic era.

So, the next time you ponder what dinosaurs are omnivores, remember that the list of potential candidates is long and filled with some truly remarkable creatures. And when it comes to the title of “biggest”, the Therizinosaurus stands tall as a testament to the sheer scale and diversity of dinosaur life.

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