1. European
   African
2. American
   All of the above

Dinosaurs actually lived on all continents! They even made it to Antartica.

1. 1,000 years ago
   100 billion years ago
2. 65 million years ago

Dinosaurs died out about 65 million years ago. They appeared on the earth about 230 million years ago.

1. Brown
   Green
2. Both

Dinosaur colors are mostly unknown, but some are assumed to have been green and brown. This was so they could hide among trees.

1. London
   Colorado
2. New Jersey

Colorado is called the Stegosaurus State because the first Stegosaurus fossil was found in Morrison. Where's the T-Rex state?

1. Nests
   Tree houses
2. Cabins

Dinosaurs built nests for their eggs, like birds do. Dinosaur nests or remnants have been discovered by paleontologists.

1. Vegan
   Meat eaters
2. Lacto-vegetarians

The first dinosaurs were meat eaters. Later, they developed into plant eaters and omnivores.

1. Furry friend
   Terrible lizard
2. Here comes trouble

Dinosaur is a Greek word. It means "terrible lizard." It was coined by Richard Owen in 1842.

1. A human baby
   A dinosaur
2. A bottlenose dolphin

Dinosaur brains were actually smaller than a human baby's. Dolphins and whales have the largest brains!

1. They were meat eaters
   They were plant eaters
2. They were the smartest

In general, dinosaurs that walked on two feet were meat eaters. Those that had four legs were plant eaters.

1. As long as a car
   As long as an adult human body
2. As long as human arms

T-Rex had massive back legs, but his two little front legs were three feet long, about the size of human arms. Kinda creepy, actually.

1. 2 feet long
   1 foot long
2. 6 inches long

T-Rex teeth were actually six to nine inches long. They could not chew, so they would just swallow their food in whole mouthfuls.

1. Bipeds
   Sprinters
2. Seriously dangerous

Bipeds are dinosaurs that ran on two legs. Be thankful you never got chased by one - even though you're a biped as well.

1. Like we do!
   Laid eggs
2. They were hermaphrodites

Dinosaurs laid eggs. Sometimes the males guarded the eggs.

1. Traveled in packs
   Were solitary creatures
2. Were vicious

Plant-eating dinosaurs were herding animals. They traveled in packs for protection.

1. Humans
   Lions
2. Birds

Many scientists believe that birds are dinosaurs! That's why they argue that dinosaurs aren't extinct - not all of them, anyway.

1. 3 feet
   7 feet
2. 39 feet

The Quetzalcoatlus actually had a wingspan of 39 feet! Those are some pretty massive wings!

1. Nobody knows
   To generate electricity
2. For fashion

Nobody actually knows why the stegosaurus had plates on its back! Maybe for protection, for attracting mates, for temperature regulation or for something else entirely.

1. The Ice Age
   Paleolithic
2. Mesozoic

Dinosaurs lived in the Mesozoic Era. There were three periods in this era: Triassic, Jurassic and Cretaceous.

1. The size of a car
   The size of a house
2. The size of the Grand Canyon

Some dinosaur skulls are so big they're actually the size of a car! They had little "windows" in their skulls to make them lighter.

1. 8 small meals
   A gallon of food
2. Half a ton of food

The biggest plant eaters actually consumed up to half a ton of food per day. Talk about roughage.

1. Massive
   The size of dogs
2. The size of humans

We assume all dinosaurs were massive, but they were actually human-size, for the most part. We don't find many of their bones because bigger bones are fossilized more easily.

1. Massive
   Small
2. Blind

The first dinosaurs, in the Triassic period, were actually quite small. They didn't get really big till the Jurassic period.

1. It's unknown
   They lived for only 5 years
2. They were immortal

Scientists actually don't know what the typical dinosaur lifespan was. Some think it could have been as long as 200 years!

1. Triceratops
   T-Rex
2. Pterodactyl

Triceratops has the biggest skull. Its skull could grow to more than nine feet long.

1. The largest dinosaur
   The blue whale
2. They were the same

The blue whale is actually bigger than any dinosaur. It can measure more than 90 feet long.

1. Without a doubt
   It's assumed so
2. No

Researches believe that dinosaurs shed their skin, but they're not certain. This would make them similar to snakes and lizards.

1. Copious amounts of water
   Large rocks
2. Trees

Dinosaurs would often swallow large rocks. This would help them to grind up food in their bellies.

1. Yes
   No, they cooled the earth
2. Nobody knows

Dinosaurs contributed to global warming, thanks to their gas. That would be the plant-eaters, mainly.

1. Dinosaur
   Cheetah
2. Turtle

The cheetah could actually run faster than any dinosaur. But some dinosaurs moved faster than others.

1. 10 feet
   15 feet
2. 39 feet

A Brachiosaurus could actually stretch its head up 39 feet. It was the tallest plant-eater.

1. Over 1,000
   500
2. 50

There were actually over 1,000 different species of non-avian dinosaurs. There are still dinosaurs that haven't been discovered.

1. Dinologist
   Reptologist
2. Paleontologist

Paleontologists are the scientists that study dinosaurs. They have a pretty cool job.

1. 165 million
   5 million
2. Nobody knows

Dinosaurs ruled the Earth for 165 million years. Just to put that into perspective: humans have been around for 2 million years.

1. Baseball-size
   Basketball-size
2. As big as a football field

The largest dinosaur eggs were the size of a basketball. They had a thick outer shell.

1. Quite small
   Filled with air
2. Filled with lead

Meat-eating dinosaurs had bones filled with air. That means that their skeletons were rather light, like birds.