Are Dinosaurs Real?
Yes, they really lived! Discover how scientists know dinosaurs existed, when they lived, what happened to them, and why you can still see a dinosaur outside your window today.
Quick Answer
Yes, dinosaurs are real! They were real animals that lived on Earth from about 245 million to 66 million years ago. We know because scientists have found their fossils all over the world. The giant dinosaurs are extinct, but birds are living dinosaurs, so dinosaurs are still around today!
How Do We Know Dinosaurs Were Real?
No person has ever seen a living T. rex, so how can we be sure? The answer is fossils: the remains and traces of animals that lived long ago, preserved in rock.
Scientists who study fossils are called paleontologists. They work like detectives. Every bone, tooth and footprint is a clue, and together the clues tell us what dinosaurs looked like, what they ate and how they lived.
Dinosaur fossils have been found on every continent, even Antarctica. Scientists have named more than 1,000 different kinds of dinosaurs, and they discover new ones almost every year.
6 Kinds of Dinosaur Clues
Bones & skeletons
Hard bones turn to stone over millions of years. Scientists put them together like a giant puzzle.
Teeth
Sharp, jagged teeth mean a meat-eater. Flat or peg-shaped teeth mean a plant-eater.
Footprints
Tracks in old mud show how dinosaurs walked, how fast they moved, and if they traveled in groups.
Eggs & nests
Fossil eggs, nests and even baby dinosaurs show how they laid eggs and cared for their young.
Fossil poop
Yes, really! Fossilized poop (called coprolites) shows what dinosaurs ate for dinner.
Skin & feathers
Rare fossils keep prints of scaly skin or feathers, so we know some dinosaurs were fluffy!
How Does a Dinosaur Become a Fossil?
- 1A dinosaur dies near a river, lake or swamp.
- 2Mud and sand quickly cover its body, and the soft parts rot away.
- 3Over millions of years, more layers pile on top and press down.
- 4Minerals in the water slowly replace the bones, turning them into stone.
- 5Wind, rain or digging wears the rock away, and a fossil is found!
When Did Dinosaurs Live?
Dinosaurs lived during the Mesozoic Era, sometimes called the Age of Dinosaurs. It lasted about 180 million years and is split into three periods.
Triassic
252–201 million years ago
The first dinosaurs appear. They were small and fast.
Jurassic
201–145 million years ago
Giant long-necks like Brachiosaurus and Diplodocus roam the land.
Cretaceous
145–66 million years ago
T. rex, Triceratops and the first flowers. It ends with a giant asteroid.
Today
Now
Non-bird dinosaurs are gone, but birds, the living dinosaurs, are everywhere!
🤯 Time travel fact: T. rex lived closer in time to you than to Stegosaurus! Stegosaurus died out about 80 million years before T. rex appeared.
What Happened to the Dinosaurs?
About 66 million years ago, a giant asteroid about 6 miles (10 km) wide smashed into Earth near what is now Mexico. The crash caused huge fires, giant waves and clouds of dust that blocked the sun for a long time.
Without sunlight, plants died, then the plant-eaters, then the meat-eaters. About three out of every four kinds of animals disappeared, including all the giant dinosaurs.
Read the full story in When Did Dinosaurs Go Extinct?
Are Dinosaurs Still Alive Today? Yes, Birds!
Some small, feathered dinosaurs survived the asteroid, and their great-great-great (and many more greats!) grandchildren are the birds we see today. Scientists agree that birds are a living branch of the dinosaur family.
Birds share many features with dinosaurs like T. rex and Velociraptor: hollow bones, wishbones, three main toes on their feet, and feathers. One famous fossil, Archaeopteryx, looks half dinosaur and half bird, with teeth, claws, a bony tail and feathered wings.
🐔 Next time you see a chicken, a pigeon or a duck, say hello to a real, living dinosaur! There are more than 10,000 kinds of birds alive today.
Movie Dinosaurs vs Real Dinosaurs
❌ Myth: People and dinosaurs lived at the same time.
✅ Fact: The last giant dinosaurs died about 66 million years ago. The first humans appeared only about 300,000 years ago.
❌ Myth: Pterodactyls and sea monsters were dinosaurs.
✅ Fact: Flying pterosaurs and swimming reptiles like Mosasaurus were dinosaur cousins, not dinosaurs.
❌ Myth: Velociraptors were as tall as a person.
✅ Fact: Real Velociraptors were about the size of a turkey and covered in feathers.
❌ Myth: Scientists can clone dinosaurs from DNA, like in the movies.
✅ Fact: DNA breaks down long before it could last millions of years, so there's no dinosaur DNA left to clone.
Where Can Kids See Real Dinosaur Fossils?
The best way to prove dinosaurs are real is to see their bones in person! A few great places to visit:
- 🏛️ Field Museum
Chicago, Illinois: home of Sue the T. rex - 🏛️ American Museum of Natural History
New York City: one of the world's biggest dinosaur collections - 🏛️ Smithsonian National Museum of Natural History
Washington, D.C.: free entry and a huge fossil hall - 🏛️ Dinosaur National Monument
Utah & Colorado: a whole wall of bones still in the rock - 🏛️ Royal Tyrrell Museum
Drumheller, Alberta, Canada: in the middle of real dinosaur country - 🏛️ Natural History Museum
London, UK: free entry and dinosaur galleries
Many local natural history museums have dinosaur fossils too, so check what's near you!
Tips for Parents: When Your Child Asks “Are Dinosaurs Real?”
Little ones see dinosaurs in cartoons, books and toy aisles, so it's natural to wonder whether they're real, pretend, or hiding in the backyard! A few ideas:
- Reassure them. Dinosaurs were real, but the big ones lived a very, very long time ago and can't hurt anyone today.
- Point out a bird. It's a fun, concrete way to show that dinosaurs' relatives are all around us.
- Play paleontologist. Bury toy dinosaurs in sand and dig them up with a brush. See our dinosaur toys and play ideas.
- Visit a museum. Seeing a real skeleton that's taller than a house makes it click!
Frequently Asked Questions
Are dinosaurs real or fake?
Dinosaurs are real! They were real animals that lived on Earth for about 165 million years. We know because scientists have found millions of dinosaur fossils, including bones, teeth, footprints, eggs and even fossil poop, on every continent.
Are dinosaurs still alive today?
The giant dinosaurs like T. rex and Triceratops died out about 66 million years ago. But birds are living dinosaurs! Birds evolved from small, feathered meat-eating dinosaurs, so every chicken, pigeon and owl is a dinosaur.
Did humans live with dinosaurs?
No. Non-bird dinosaurs disappeared about 66 million years ago, and the first humans appeared only about 300,000 years ago. No person has ever seen a living T. rex.
How do we know what dinosaurs looked like?
Scientists study fossil bones to work out size and shape, and compare them with animals alive today, like birds and crocodiles. Rare fossils of skin and feathers help too. Colors are mostly educated guesses, although scientists have worked out the colors of a few feathered dinosaurs.
What killed the dinosaurs?
About 66 million years ago, a huge asteroid around 6 miles (10 km) wide crashed into Earth near what is now Mexico. It caused fires, tsunamis and a long, dark winter that most dinosaurs could not survive.
Could Jurassic Park happen in real life?
No. Dinosaur DNA broke down millions of years ago, so scientists can't bring dinosaurs back. The closest thing to a living dinosaur is a bird!
Image credits: T. rex illustration is original Puffsaurus artwork. Via Wikimedia Commons: Sue the T. rex by Dallas Krentzel (CC BY 2.0); Dinosaur National Monument Wall of Bones by the U.S. National Park Service (public domain); Archaeopteryx cast (public domain).
Does your little one love dinosaurs? 🦕
Explore our dinosaur-themed nursery rhymes and kids' songs!