Bye, bye, birdie, indeed. For this list, we’ll be going over the most interesting animals which have either died out entirely, or which have so few members that they’re functionally Extinct.

Our world is changing, and these at-risk animals are paying the price. For this list, we’re looking at endangered species who are most at risk for going Extinct in the next 30 years. WatchMojo counts down the 10 Animals That Could be Gone by 2049.

Megalodon sharks were mighty predators of prehistoric waters. And in today's world they're a film and TV favourite whenever a marine monster is needed! But what if they still prowled our real-life oceans today? What if megalodon never went Extinct? Would you ever go anywhere near the ocean without feeling terrified??

There are many animals thought to be Extinct, but they may be alive today. From the Megalodon to the Japanese River Otter to the Passenger Pigeon, to the Javan Tiger to the Mexican Grizzly Bear to the Woolly Mammoth, these are animal species that vanished but could resurface someday. Are these Extinct animals still alive today? Maybe; they could be found alive at any moment! WatchMojo counts down ten animals we thought were Extinct but might be alive!

Unfortunately, there have been many species Extinctions caused by humans. Whether they were animals hunted to Extinction like the Quagga, the Western Black Rhinoceros or the Steller’s Sea Cow, or made Extinct by habitat loss like the Javan Tiger, these animals went from endangered species to Extinct species – because of us. WatchMojo counts down ten animals driven to Extinction by humans.

They may be gone, but their myths and legends shall live on. Join http://www.WatchMojo.com as we count down our picks for the top 10 Extinct animals.

If this list proves anything, it's that humans are truly the planet's apex predator. Welcome to WatchMojo, and today we’re counting down our picks for the species that have disappeared throughout history.

These animals defied the odds! Welcome to WatchMojo, and today we’re counting down our picks for the animals that were saved from going Extinct.

What if the dinosaurs... were still here?? Join us... and find out!

Good luck finding these Extinct drinks! For this list, we’ll be looking at drinks that made an impact, despite having a short shelf life.

Dead and forgotten... well, sort of. For this list, we’re looking at languages that no longer have any native speakers. While some are spoken in specific circumstances or developed into modern variants, these ancient languages have been lost to the passage of time. WatchMojo counts down the Top 10 Dead Languages.

The human race has walked the Earth for 200,000 years or more, but is our time on this planet coming to an end? With the threats of global warming, war and disaster looming large, are our days numbered? According to some of the experts, we're already in the middle of the Holocene Extinction... But what does that mean? And how much trouble are we in??

“Jurassic World” made us wish dinosaurs were still roaming the earth while also making us grateful that they went Extinct over 66 million years ago. On one hand, few sights would be more awe-inspiring than witnessing a live Brachiosaurus wander by. On the other hand, it’s hard to imagine anything more terrifying than coming face to face with a Velociraptor or Tyrannosaurus rex. If these movies have taught us anything, it’s that cloning dinosaurs and showcasing them in a wildlife park sounds like a promising business venture on paper. In the end, though, playing God would probably come back to bite us… quite literally. So, now’s as good a time as any to seriously ask ourselves, “what if Jurassic World was real?”

What is the biggest dinosaur in the world? What is the tallest dinosaur? The biggest water dinosaur? Well, between the Tyrannosaurus Rex, Giganotosaurus and Titanoceratops, these prehistoric creatures may be Extinct animals, but they can still be scary big dinosaurs. WatchMojo counts down ten of the largest dinosaurs to have ever lived.

Some of the most famous dinosaurs are also some of the coolest dinosaurs. From the brachiosaurus and it’s extremely long neck, to the Stegosaurus and its characteristic spiked tail, to the Spinosaurus, which was basically just a big crocodile on two legs, these prehistoric creatures may be Extinct animals, but they’re still badass dinosaurs. WatchMojo counts down ten of the most popular dinosaurs to have ever lived.