Top 10 Most Dangerous Dinosaurs

Dinosaurs were the original apex predators, and when you think of the most dangerous ones, it's easy to imagine towering beasts with razor-sharp teeth and deadly claws. But not all dinosaurs were massive. Some of the scariest ones were smaller, but just as lethal.

From carnivorous giants that could crush their prey with one bite to pack hunters that relied on speed and intelligence to take down animals much bigger than themselves, the ancient world was full of creatures that would give even the bravest person pause.

The Top Ten

Spinosaurus

Spinosaurus is a genus of theropod dinosaur that lived in what is now North Africa during the Lower Albian to Lower Cenomanian stages of the Cretaceous period, approximately 112 to 97 million years ago. It is notable for its distinctive sail-like structure on its back and semi-aquatic adaptations. Spinosaurus... read more

The biggest carnivorous dinosaur so far, not to mention one of the most adapted. So many people are incorrect about T-Rex, saying it's the smartest and most adapted. T-Rex braincases were actually fairly small. Adapted? Not as much as Spinosaurus, which had a sail that could have been used to control its body temperature.
Recent studies suggest it could be semi-aquatic, putting it up against prehistoric marine predators. Also, the scene in Jurassic Park III was very accurate. The T-Rex died not because of the bite wound on the neck, but because the Spinosaurus twisted and snapped the neck, paralyzing or killing it. T-Rex fanboys need to learn their place.
Tyrannosaurus

Tyrannosaurus, meaning "tyrant lizard" from the Ancient Greek tyrannos ("tyrant") and sauros ("lizard"), is a genus of coelurosaurian theropod dinosaur.
It had an extraordinary bite force, estimated at around 12,800 pounds (approximately 5,800 kilograms). This is considered the strongest known... read more

T-Rex is awesome! He is the one, the only, king of all dinosaurs! There are some things Tyrannosaurus Rex has that Spinosaurus doesn't:
1. T-Rex has bone-crushing jaws that could crush a car.
2. He can run 25 miles per hour, faster than a person.
3. He lives in North America.
4. He has feathers.
5. He could prey on sauropods (mainly Alamosaurus), hadrosaurs, and other dinosaurs. He even fights Triceratops.
6. He lived after Spinosaurus.
7. He is the king of all dinosaurs.
8. He hunts in packs like lions.
Spinosaurus, on the other hand, only has these things:
1. He lives in Africa, not North America.
2. His jaws are not very strong, and his teeth are conical.
3. He mainly eats fish.
4. He lives near water.
5. He walks on all fours and probably wasn't that fast.
6. His sail was fused to his backbone, so if he fell over on his side, he would break his back and die.
7. He went extinct because he couldn't compete very well with the other carnivores in his environment once the climate was changing.
Giganotosaurus

Giganotosaurus is a genus of theropod dinosaur that lived in what is now Argentina during the early Cenomanian age of the Late Cretaceous period, approximately 99.6 to 97 million years ago. It was one of the largest known terrestrial carnivores and may have exceeded the size of Tyrannosaurus rex. Fossil... read more

It may not have been the biggest dinosaur, but it was either the 3rd or 2nd largest carnivore. This guy is 47 feet long, 18 feet tall, and it hunted in packs. Only something from the Lord Himself could kill this beast. This guy should be number 1!

Giganotosaurus was the second biggest theropod, I think, but far bigger than Carcharodontosaurus. It ate sauropods, and scientists even say they were strong and big enough to kill a full-grown Titanosaurus.
P.S., it was also bigger than T. Rex, and I also think they only vote because some of these dinosaurs were famous and familiar.
Carcharodontosaurus

Carcharodontosaurus is a genus of carnivorous carcharodontosaurid dinosaurs that lived approximately 100 to 94 million years ago, during the Cenomanian stage of the mid-Cretaceous Period. It was among the largest theropods, comparable in size to Tyrannosaurus rex. Fossils have been found in North Africa... read more

It had a slightly darker look compared to the T. rex and other larger carnivores. It also had smaller arms, like the T. rex, although having bigger arms gave it the ability to move better and have slightly better balance. It existed in the mid-to-late Cretaceous period.

Carcharodontosaurus should be number 3, while T. rex should be 4. The shark-toothed lizard (that's the definition) had a more lethal bite than T. rex and could possibly run faster. The only thing it was not superior to T. rex in is its brain, which was only half the size of T. rex's.
Utahraptor

Utahraptor is a genus of large theropod dinosaurs from the Early Cretaceous Period. It includes the species Utahraptor ostrommaysorum, which is the largest known member of the family Dromaeosauridae. Fossils have been discovered in the Cedar Mountain Formation of Utah, and the species is estimated to... read more

Pound for pound, Utahraptor was one of the deadliest killers ever, ranking even above T. Rex, if we're speaking literally, only falling behind its smaller cousins like Troodon and Velociraptor. However, what it lacks in skill and speed, it makes up for in size and power.
At 20 feet long and 8 feet tall, Utahraptor could kill a full-grown grizzly bear by using superior agility to its advantage. It was more than a match for much bigger dinosaurs, some of which it hunted alone, despite these dinosaurs being more than twice its size.

Now, Utahraptor is the biggest raptor and could tear to shreds Velociraptor, which most of you know as a fierce, mini T. rex kind of creature that hunted in packs and was intelligent.
Actually, Velociraptor was the size of a turkey, not that intelligent, and not nearly as fierce as our Jurassic Park raptor. The dinosaur that was actually in Jurassic Park and was called a "Velociraptor" is a Deinonychus. Look it up, people.
Allosaurus

Allosaurus is a genus of large theropod dinosaur that lived approximately 155 to 150 million years ago during the Late Jurassic period. It was one of the top predators of its time and is often found in the fossil-rich Morrison Formation in North America. Allosaurus had strong jaws and sharp teeth suited... read more

Yeah, sure, Allosaurus may not be the biggest or the physically strongest dinosaur on this list, but anything of that size and speed would've been more of a menace to modern society and us as humans than most other dinosaurs.
The fact that it might've hunted in packs of over 40 doesn't make it any better. Nothing of that size or power should be traveling in groups that big, and the fact that it does... well, that just makes it an absolute menace, now doesn't it?

Allosaurus is a theropod built for both power and speed. It's the most common predator of the Jurassic and also the most successful. Allosaurus has three huge talons on its powerful arms.
Even though its bite is not as strong as a Tyrannosaurus, it is still a very devastating weapon with shark-like teeth, and it can use its upper jaw like an axe. Allosaurus can be put at number 5 because a Utahraptor is no match for Allosaurus.
Velociraptor

Velociraptor is a genus of dromaeosaurid theropod dinosaur that lived about 75 to 71 million years ago during the Late Cretaceous Period. It is known for its agility and intelligence compared to other dinosaurs of its time. Velociraptors had sharp claws and teeth which they used to hunt prey.

Velociraptor should be 3rd because they are intelligent, fast, and most of all, they can jump really high. They might be small, the size of a chicken, or 6 feet tall, but it doesn't mean that they can't be the deadliest dinosaur.

The Velociraptor is very deadly and hunts in packs. Although they are actually pretty small, I agree, they are probably the smartest and most intelligent dinosaurs to ever walk the Earth.

I voted for Velociraptor because they hunt in packs to take down dinosaurs twice their size. Not to mention their speed and razor-sharp toe claws. So dangerous!
Mapusaurus

Mapusaurus was a large predatory dinosaur belonging to the carcharodontosaurid group, which lived during the Late Cretaceous period. Fossils have been discovered in the Huincul Formation of Argentina, and there is some evidence suggesting it may have also lived in what is now Chile. Mapusaurus could... read more

Disregarding the fact that Mapusaurus was bigger than the T. rex, it was also a pack hunter, hunting in groups of 3-5. This is justified as Mapusaurus's primary diet consisted of what appears to be the largest land animal that ever existed.

It took down the biggest dinosaurs, like Argentinosaurus (may have misspelled that). It hunted in packs and also killed other carnivores. It was about 45 feet, bigger than a T. rex. Definitely the most dangerous dino.

This dino was 40 feet long, weighed 3 tons, hunted in packs, and had powerful legs and tail.
Ankylosaurus

Ankylosaurus is a genus of armored dinosaur known for its distinctive club-like tail and body covered in bony plates. Fossils have been found in geological formations from the late Cretaceous Period, approximately 68 to 66 million years ago, in western North America. This places it among the last non-avian... read more

The Ankylosaurus could take down a T-rex. It also had multiple defences like the club on its tail and the armoured plates. Any predator smaller than a T-rex wouldn't stand a chance!

The Ankylosaurus is vegetarian, but they are quite dangerous, large, and staggering. I think they don't have too much fear of carnivorous dinosaurs.
Although it is not as big as a Brachiosaurus, it's one of the most dangerous vegetarian dinosaurs. Their appearance is somewhat terrifying, armed like tanks, and their temper doesn't seem to be good. A bad-tempered dinosaur is dangerous, and the more bad-tempered it is, the more dangerous it becomes.
Saurophaganax

Think of an Allosaurus, only bigger, nastier, and mightier. Saurophaganax is an Allosaurus on steroids. It's the grizzly bear of the Jurassic period, challenging Allosaurus, Edmarka, and Epanterias. It had huge claws and ferocious jaws. This should be in the top 4 or higher.

Saurophaganax is the grizzly bear of the Jurassic. He could hunt anything twice his size.
He makes Allosaurus look like a coyote compared to this killer.

Congratulations! Your Allosaurus has evolved into Saurophaganax!

The Newcomers

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Yangchuanosaurus
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Metriacanthosaurus

The Contenders

Tarbosaurus

Tarbosaurus is a genus of tyrannosaurid theropod dinosaur that lived in Asia about 70 million years ago, during the Late Cretaceous Period.
Its fossils have been found primarily in Mongolia's Nemegt Formation, where it is considered the apex predator of its ecosystem. It is closely related to... read more

The Tarbosaurus is the most powerful predator in Asia. It can kill an Albertosaurus, and just to say, Spinosaurus seems powerful only because it killed the T. rex in Jurassic Park 3. It's not really that powerful.

Tarbosaurus is the most dangerous dinosaur in Asia. That's because it's basically T. rex junior. It can definitely defeat a Velociraptor or a Utahraptor. I believe it should be about top 5 or 7.

The Tarbosaurus was a powerful dinosaur in the Late Jurassic and Early Cretaceous periods. It didn't face too many significant challenges, which might have made it seem weaker, but it did confront the Therizinosaurus. By the way, the Tarbosaurus would definitely defeat Velociraptors.
Megaraptor

It is 26 feet long and 200 pounds. It's a successful hunter and more dangerous than T. rex.
Don't say anything until you know about it. I hope you will go with me. That's all.

Megaraptor and Megalodon are stronger than a Utahraptor, so why is Utahraptor fourth?
Deinonychus

This creature is stealthy, fast, and intelligent, which makes it a formidable predator. They hunt in packs, usually numbering 1-5. It has razor-sharp claws, which they use for hunting. Its sharp claws dig into the skin like blades and can almost claw inwards 180 degrees.

Yeah, they made a mistake in the first Jurassic Park, and they accidentally identified the Velociraptor as a Deinonychus. Deinonychuses are actually the ones that are scaly, smart, and have big claws.

I'd say raptors are the most dangerous dinosaurs out there. If any raptor was scaled up to the size of T. rex, they've got the whole package: speed, brains, claws, teeth, and teamwork.
Acrocanthosaurus

Acrocanthosaurus is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Fossils have primarily been found in the Antlers Formation of Oklahoma and Texas. It was one of the largest theropods of its time, recognized for... read more

The Acrocanthosaurus is 40 feet long and was stronger, faster, and smarter than any carnivore. Capable of killing almost any dinosaur, Acrocanthosaurus should be number one.

Acro is like 5 feet bigger than the largest T. rex and had a high bite force.
Stegosaurus

Stegosaurus is a type of armored dinosaur. Fossil remains have been found in rocks dated to the Late Jurassic period, between 155 and 150 million years ago, in the western United States and Portugal. It is known for its distinctive double row of kite-shaped plates along its back and spiked tail, which... read more

No one beats this dino! It could individually kill packs of anything, including Tyrannosaurus!

Plates on its back and deadly spikes on its tail. It must be in the top ten.
Albertosaurus

Albertosaurus is a genus of tyrannosaurid theropod dinosaurs that lived in western North America during the Late Cretaceous Period, about 70 million years ago. Fossils have been found primarily in Alberta, Canada. The genus was first described in 1905 by Henry Fairfield Osborn.

A close cousin to the T. rex, it hunted in packs. It is part of the 'Tyrannosaur' family. Need I say more?

They say Albertosaurus is the predecessor and ancestor of the T. rex.
Majungasaurus

Majungasaurus is a genus of abelisaurid theropod dinosaur that lived in Madagascar from 70 to 66 million years ago, during the Late Cretaceous Period. The genus contains a single species, Majungasaurus crenatissimus. It was a top predator and is known for its short, thick skull and possible cannibalistic... read more

Majungasaurus and Majungatholus are the same. Majungasaurus should be higher than this. It's quite stocky and has a very thick skull dome which can be used to headbutt the flanks of its enemies.
It's also big and has powerful jaws with powerful teeth. It also has a powerful tail that it can use as a bat to strike an enemy. Also, it has cannibalistic behavior.

Majungatholus atopus was a meat-eating dinosaur, a theropod. It was at the top of the food chain in its locale. It probably ate sauropods, long-necked plant-eaters, and other large dinosaurs. The name Majungatholus is derived from "Majunga," a district of Madagascar, and "tholus," which means dome in Latin.
Troodon

Troodon is a dubious genus of relatively small, bird-like dinosaurs known from the Campanian age of the Cretaceous period. The best-known species, Troodon formosus, is based on fossils found in Montana. However, its classification remains uncertain due to the limited and fragmentary nature of the fossil... read more

While enormous theropods like T. Rex and Spinosaurus can certainly pose a threat, Troodon is like something from a nightmare. With disemboweling claws and superior intelligence, this killer is faster than any human. But the real threat comes from its size.
Troodon was 5 feet tall, small for a dinosaur, but this means it could go into buildings and hunt you down in your own home. With large eyes and good hearing, it could catch you in the dead of night. Add the fact that they hunt in packs, and your survival chance is absolutely zero.

One of, if not my favorite dinosaur, but I don't think it was all that much of a fighter. Troodon had different advantages, like its large brain.
Carnotaurus

Carnotaurus, meaning "meat-eating bull" in Latin, is a genus of abelisaurid theropod dinosaur that lived in what is now South America about 70 million years ago during the Late Cretaceous period. It is known for its distinctive horns above the eyes and extremely reduced forelimbs. Carnotaurus was one... read more

I mean, literally, Carnotaurus was one big predator, but paleontologists still believe that the one specimen, which was Carnotaurus sastrei, was a juvenile and it was 25 feet tall.
Yeah, I mean it was one of the most dangerous predators in the southern hemisphere as it could run at a speed of 45 km per hour. And by the way, I'm a big fan of The Gaming Beaver, so I should call him 'Toast.'

Why wasn't this one on the list to start? Just look it up, and you will see. I mean, its name means "meat-eating bull," and it was bipedal, 25 feet long, and weighed a ton. Also, it most likely was not a scavenger like the Tyrannosaurus rex is thought to be.
Triceratops

Triceratops is a genus of herbivorous ceratopsid dinosaur that first appeared during the late Maastrichtian stage of the Late Cretaceous period, about 68 million years ago in what is now North America. It is known for its large bony frill and three distinct facial horns. Triceratops was one of the last... read more

Triceratops lived in a very hostile environment during its time. While it had horns and a thick frill for very effective defense, it was a territorial dinosaur and one that wasn't easy prey for any predator.

Scientists have actually stated that Triceratops is officially the most dangerous dinosaur ever. Look it up on the Discovery Channel.

It is actually the strongest. A T. rex cannot bite through its frill, so it must maneuver around it to get bites. All the Triceratops must do is charge straight at it. I think it could beat a T. rex 70% of the time. T. rex was most likely an ambush hunter.
Dilophosaurus

Dilophosaurus is a genus of theropod dinosaur. It includes a single confirmed species, Dilophosaurus wetherilli, which lived during the Early Jurassic period. Fossils have been found in the Kayenta Formation of Arizona.

Dude, that dinosaur is a beast. It can spit out acid up to 20 feet. If that hit a dinosaur like Utahraptor, that would blind it, and Dilophosaurus could go for the kill. Plus, it's very fast and can jump high.

I don't know how it landed in 16th place! For me, it's more dangerous than any other dinosaur in the world, even the T-Rex. It eats the Spinosaurus. I don't care if you laugh, but you must see how that thing looks. It appears even more terrifying than a Tyrannosaurus Rex. That dinosaur is a BEAST! Really.

It didn't have a neck frill and couldn't spit acid, but was still a powerful predator.
Torvosaurus

Torvosaurus is a genus of carnivorous megalosaurid theropod dinosaurs that lived approximately 153 to 148 million years ago during the late Jurassic Period in what is now Colorado and Portugal. It was one of the largest predators of its time. Fossils indicate it had large teeth and strong limbs for hunting... read more

This dinosaur needs more attention. Maybe this top ten list is based on fanboy opinions, because why is Torvosaurus ranked so low? This is a strong and powerful dinosaur. It might be shown with slender pictures, but once you see its skeleton, you will see it is a monster. Others should vote for this.

This is an extremely dangerous dinosaur. It should be at the top of the list. A Torvosaurus could kill an Allosaurus. It probably could take down gigantic dinosaurs like Dimerosaurus (a Portuguese sauropod). It would have killed other predators like Allosaurus or Ornitholestes.
Ceratosaurus

This dinosaur is underestimated. Others think it is overshadowed by Allosaurus, which is not true. This predator has huge teeth and sharp claws. It's also fast and has cool horns and dermal armor. Its jaws are also strong and lethal. It can also compete with Allosaurus, Torvosaurus, Epanterias, and Saurophaganax. This is one deadly predator. It should be in the top ten.
Dromaeosaurus

Too small to kill a T. rex, but at least it is smart, right?
Tyrannotitan

Comparable to Giganotosaurus and Carcharodontosaurus (and possibly larger), it was one of the South American monsters surrounded by large sauropods for food. Its teeth could slice and were somewhat more robust, like a Tyrannosaur. It gave sauropods nightmares and has a killer name too.

Bigger than Tyrannosaurus, powerful arms, related to Giganotosaurus, Mapusaurus, and Carcharodontosaurus.