Dinosaurs were a diverse group of reptiles that lived millions of years ago during the Mesozoic Era. They ranged in size from small, bird-like creatures to massive, long-necked herbivores and fierce, carnivorous predators. Dinosaurs first appeared around 230 million years ago and dominated the Earth for about 165 million years until their extinction about 66 million years ago.
Dinosaurs are known for their unique characteristics, including their three-toed feet, long tails, and some species having feathers. They laid eggs and some were able to walk on two legs, while others walked on all fours. Scientists have studied fossils to learn more about these prehistoric creatures and how they lived, hunted, and evolved over time. Despite their extinction, dinosaurs continue to capture the imagination of people around the world and remain a fascinating topic of study for scientists and enthusiasts alike.