Some see squirrels as adorable, bushy-tailed creatures that run in circles around tree trunks before they finally race up ...

Mother Nature doesn't always play by the rules... Sometimes she flips the script, hits Caps Lock and produces something so unusually large that it looks like it could be cast in a sci-fi movie. We're ...

Size shapes the way animals move, hunt, and survive. For example, in the ocean, ginormous creatures rely on their massive bodies to travel long distances or ambush prey. On land, there are large ...

The largest sloth of all time was the size of an elephant. Known to paleontologists as Eremotherium, the shaggy giant shuffled across the woodlands of the ancient Americas between 60,000 and five ...

Freakishly GIANT Animals That Actually Exist! 5 Weird Animal Facts! Join Jason Miller as he describes the world’s largest and biggest animals on the planet. Learn facts about the Blue whale, Mola Mola ...

Many giant animals roamed the Earth after non-avian dinosaurs went extinct. Illustration by Emily Lankiewicz / Dmitry Bogdanov via Wikipedia under CC BY-SA 3.0 / Dmitry Bogdanov via Wikipedia under CC ...

From an evolutionary perspective, is bigger always better? The journey the thunder beasts took to reach such mega proportions from such humble beginnings forces us to ask an important question, one ...

Colossal Biosciences has announced a partnership to resurrect giant flightless birds called moa. But the company's recent dire wolf project was controversial, and moa are an even more ambitious target ...

Jason Gilchrist does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Ancient sloths lived in trees, on mountains, in deserts, in boreal forests and on open savannas. Some grew as large as elephants. Illustration by Diego Barletta The largest sloth of all time was the ...