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There was much more food back then, so they ate more and grew.
Not all dinosaurs were huge. Many were quite small. It is believed that during the Mesozoic, earth was at its highest point of life sustaining ability. The high oxygen levels allowed truly massive animals to evolve.
What else can I help you with?
Why where dinosaurs so big?
Why dinosaurs were so big is because in prehistoric times there was no winter. and dinosaurs are lizards and lizards never stop growing. so mixed with humidity and surplus of food the dinosaurs or lizards lived for hundreds of years and grow all that time.
Why were woolly mammoths so tall?
Not all dinosaurs had large feet. Some dinosaurs were small and didn't have big feet.
How big where dinosaurs?
very big
Are dinosaurs giant lizards?
yes because dinosaurs are big
What is a stegosaur dinosaurs?
stegasaurs are dinosaurs with big spikes on their long tail. they are not as big as a tyrannosaurus but bigger than a valociraptor.
What really killed the dinosaurs?
some predict the the dinosaurs died of a big asteroid.
Does dinosaurs a kind of reptiles?
yes dinosaurs are a kind of reptiles they are big lizards
How big were the first dinosaurs?
The first dinosaurs evolved from fishes and were no bigger than these days crocodiles.
What 2 animals are big relations to dinosaurs?
2 animals that are related to dinosaurs are sharks and croodiles.
What are the release dates for Valley of the Dinosaurs - 1974 The Big Toothache?
Valley of the Dinosaurs - 1974 The Big Toothache was released on: USA: 14 December 1974
Are all dinosaurs at least as big as a horse?
No
Are hens dinosaurs?
Yes (WITH A BIG MAYBE ATTACHED) The difference between certain therapod dinosaurs and birds is very small. Every feature we use to describe birds (beak, feathers, wings) first evolved on dinosaurs. In fact the morphology between birds and the raptor family of therapod dinosaurs is so similar many scientists to call birds avian dinosaurs.
