Dad, Run for Your Life!

Experience a Giant! The Tyrannosaurus rex

Ok, Dad, a Tyrannosaurus rex, is 15 to 20 feet tall, up to 40 feet long and weighing in at approximately five (5) to seven (7) tons. So, do you really think you can reason with him…STOP!! And run fast! I’ll meet you on the other side of the gates, says Simon.

Now, that was of course, an absurd idea but one that should come to your mind if staring into the eye of an animal, that is 100’s of times larger than you. However, if the truth be known, animals this size, tend to hunt only prey of their own size.

Dinosaurs likely had a variety of hunting styles which are very difficult to interpret. But it’s safe to assume most of them, would follow the typical pattern of hunting the smaller prey.

Any wild animal is potentially dangerous, and you definitely don’t want to disturb a huge carnivore like Tyrannosaurus rex. And many dinosaurs may have had non-standard hunting practices such as teamwork or special ambush tactics. This is very difficult to know from fossils. (

So you see, that myth has little truth to it except that this species of dinosaur is a meat eater. The  Tyrannosaurus rex, is one of the largest carnivorous (meat-eating) dinosaurs ever discovered.

Dad, that is not running! You cannot doddle or you will get us both on the menu for that Tyrannosaurus rex.

The speed of a Tyrannosaurus rex, would absolutely shock anyone-with their size, yet it did not slow the Tyrannosaurus rex at all with their brisk pace. Still, they were able to out walk that of any human.

FYI: Now, in trying to make sense of research, in some areas, bigger isn’t necessarily better. Take running, for example. The bigger you are, the more leg muscle mass you need to run fast. But all that extra leg muscle can weigh you down, which in turn makes it harder to run. In other words, the math starts working against you. That’s why gigantic animals like elephants usually aren’t the fastest runners on the block, at least compared to their size. Despite this, many scientists have estimated that the enormous Tyrannosaurus rex could run at speeds up to 45 miles per hour.

Here is where the rub exist in research but I found it very interesting. Studies over the years, amongst the Paleontologist has evolved with further sophisticated studies and models, so measuring size, bone structure, speed, stride and other relevant data, can now be utilized to determine more accurate information. Yet, it still varies as their only real data comes from the fossils and skeletons they are able to find. So, contrary to popular belief, the tyrant lizard king was not built for speed. Instead, the mighty Tyrannosaurus rex was typically restricted to a brisk walk, according to a rigorous new computer model. The top speed of a Tyrannosaurus rex has been a long-standing debate among paleontologists. That means, that in an imagined race between a person and the iconic dinosaur, there was the possibility that a Tyrannosaurus rex could outrun the world’s fastest human, who clocks in around 27 miles an hour.

Yet another theory was: Tyrannosaurus rex couldn’t run, but it was a speedy walker. From Speaking of Science: A new report, published Monday in the journal PeerJ, refined just how fast the dino could go. Tyrannosaurus rex wasn’t much of a runner, the study authors say. In fact, it couldn’t run at all. Instead, the animal speed-walked. Thanks to its wide stride, Tyrannosaurus rex would reach about 12 mph at its quickest hustle. “Most of us would have difficulty jogging to keep up,” said paleontologist Phillip L. Manning, director of the Mace Brown Museum of Natural History at the College of Charleston, S.C. (Not that you’d want a dinosaur with 8-inch-long teeth as a walking buddy.) But that doesn’t mean a 7-ton Tyrannosaurus rex, at a full-bore walk, was anything less than terrifying.

Lastly, my last share on speed is from, John Hutchinson, an expert on evolutionary biomechanics at the University of London’s Royal Veterinary College who has also estimated Tyrannosaurus rex speeds,  called this work a “very sophisticated computer simulation.” The max estimate of 12 mph was in line with the low end of previous tyrannosaurus models.

Dad, please stop turning around. You cannot reason with that giant!

Please Dad, you frighten me with that logic that you can make anything listen. He’s hungry and we are his next meal!

It’s really okay son, this  tyrannosaurus rex has small, tiny and puny arms so we can always get away from his grip! Dad, do you really think that giant has useless arms?

Simon, let me tell you what I learned about this giant…I do not mean gentle giant either! His arms have been a debated issue for years amongst Paleontologists. I just did not want you to worry. But the truth is, you had better run and hope you do not stumble! For now we are safe as we take a brief break, hiding out or standing still. 

Simon, that is really a myth about their arms and has been debated by the best of researchers. With the new discoveries, finds show the dinosaur’s arms were strong enough to slash their prey at close quarters, in spite of their arms being small in comparison to its body size. Originally, it was believed that the Tyrannosaurus rex used their arms primarily for one of three reasons: to grasp struggling prey; to help resting dinosaurs push themselves up from the ground; or to grip tight to mates during sex. But now, reported by the National Geographic news in 2017, it is believed that was an incorrect conclusion and that the arms were actually used to hold their prey close, using their four-inch-long claws to inflict deep wounds on intended victims. Great debate is given to the actual use of these forearms but it’s considered no matter what else, these arms were a powerful and potentially deadly weapon at the Tyrannosaurus rex’s disposal …giving reason to believe there’s still more to uncover about one of history’s greatest predators. 

Son, researchers say that when it came to the sense of smell among meat-eating dinosaurs, Tyrannosaurus were superior to all other species. Although there have been studies, there has never been a Tyrannosaurus rex brain preserved, but the area that the brain occupied and the impressions they made in the skull, reveals a source of information, about their structure. With all of the species studied, the Tyrannosaurus rex was found to have the largest part of its brain devoted to a sense of smell. It is why I told you to RUN!  Research suggest that they may have actively done their hunting at night, stalking its prey with their sensitive nose, or to simply navigate through large areas in search of their next victim.


So, though you think we are in hiding, their sense of smell and ability to use their puny three foot arms for snatching live, wriggling prey and holding it tight, should give us cause to be afraid, using our minds to figure out our next maneuver. 

The one myth I want to clear up is that though the arms are referred to as tiny…puny…it is likely only because the rest of Tyrannosaurus rex was so huge. And, a recent analysis has shown that they may have been capable of bench-pressing over 400 pounds each. Pound for pound, this study concludes, Tyrannosaurus rex’s arm muscles were over three times more powerful than those of an adult human!


  • Footprints 1.55 feet long-walked on its toes
  • Stride length of 12 to 15 feet
  • Jaws were up to 4 feet long and had 50 to 60 thick
  • Could run at speeds up to 45 miles per hour.
  • Lived in forested river valleys in North America during the late Cretaceous period.
  • Became extinct about 65 million years ago in the Cretaceous-Tertiary mass extinction.
  • Could bite off 500 pounds in one bite! 
  • Maybe it ate a few hundred pounds of triceratops one day -Then didn’t eat again for a while.
  • 1,245 burgers is about 600,000 calories, which means that each T-rex only needs about 80 hamburgers per day to survive. Tyrannosaurus rex went extinct during the K-T mass extinction, about 65 million years ago. This extinction killed the remaining dinosaurs (not just Tyrannosaurus rex) and many other animal and plant groups. This extinction was probably caused by a catastrophic asteroid colliding with Earth. 

Until We Meet Again!,


Chris Ambrose, Author 

70 is the new 50`

No matter what Life throws at you, 

it’s where Giving Up, is Never an Option!


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