🐋 Blue whale vs Pachycephalosaurus 🦖
The blue whale is about 7 times as long as Pachycephalosaurus. The blue whale weighs about 350 times as much as Pachycephalosaurus.
| Row | 🐋 Blue whale | 🦖 Pachycephalosaurus |
|---|---|---|
| Top speed We don't have a checked number for Pachycephalosaurus yet. | 20 mph32 km/h1 | no checked number yet |
| Weight The blue whale weighs about 350 times as much as Pachycephalosaurus. | 165 tons150 tonnes1 | 816 to 992 lb370 to 450 kg2 |
| Lives Nobody knows how long a dinosaur lived, so there is nothing to compare. | 80 to 90 years80 to 90 years1 | no checked number yet |
| Eats The blue whale eats tiny floating sea life; Pachycephalosaurus eats plants. | krill, tiny shrimp-like animals, by the mouthful | plants, and maybe some fruit and seeds |
| Lives in One lived long ago, one lives today: they never met. | every ocean | western North America, including Montana, Wyoming and the Dakotas |
Which one? Blue whale or Pachycephalosaurus
🏁 Who would win the race?
Nobody can time a dinosaur, so there is no race. Their bones tell us how big they were, not how fast.
We only race. Real animals mostly avoid each other. A race is the only fair contest: who reaches the tree first, by top speed.
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Getting the animals ready…
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The link carries only the two animals’ names: peabody.kids/animals/compare/blue-whale-vs-pachycephalosaurus
Where these numbers come from
- NOAA Fisheries, checked 30 October 2026.
- USDA Forest Service, Dakota Prairie Grasslands: prehistoric animals, checked 30 October 2026.