What happens if dinosaurs come back to life?

Answer 1

They would probably become the dominant group of animals on Earth again. Basically, that means humans would be killed off and non-human mammals would at least be massively diminished, in short order, but that doesn't mean that all large mammals will be effected by the ancient reptile's return, some like horses, bison, buffaloes, hippos, rhinos (depending on a species, white rhinoceroses are most like rhinos that could survive with the dinosaurs), wild pig species, mongooses, civets, fossas, bats, platypuses, echidnas, deer species, bears, wild goat/sheep species, elephants, giraffes, antelopes, cats, foxes, camels, hyenas, wolves, lemurs, monkeys, apes, rabbits, tapirs, kangaroos, wallabies, wombats, Tasmanian devils, and some other animals might still rule in large numbers, even with dinosaurs present.
Then mammals wouldn't be the only animals that rule the land, so both mammals and the ancient reptiles would probably rule earth together (much like in the book called "If dinosaurs were alive today".

Answer 2

This is a very difficult question to answer. It is dependent on which dinosaur you would choose and which period it would come from. Dinosaurs come in all shapes and sizes.

You could argue that dinosaurs are alive and living on earth today. Birds evolved from dinosaurs and share many common features especially with the Raptors. Also perhaps if legends like Mokele Mbembe or the Congo sauropod are true then dinosaurs could still be living amongst us.

The most obvious thing is that they would be very few environments the dinosaur would recognise.

Firstly although flowering plants have exist for about 100 million years. They did not become really wide spread until about 60-70 million years ago.

Similarly with Grass. Most dinosaurs never ate grass as it evolved late in the Mesozoic Era. This may cause herbiverous dinosaurs problems because modern day mammals have evolved ways of eating them. The fictional sick Triceratops in the movie Jurassic Park may be a good illustration of this.

Carniverous Dinosaurs would probably have less trouble adapting. T-Rex would I believe happily munch on an elephant rather than a Triceratops.

Since humanity is quickly killing as many species as it can it is unlikely that any dinosaur would last very long before we again have to consign it to the history books like dodo's and Mammoths.

Answer 3

Not naturally. There is a slight possibility that they could someday be cloned.

Answer 4

The Earth will be filled by dinosaurs and we will get extinct,every thing will start again

so shut up