Music: Savannah Mountains, Struggle in the Jungle, Ballroom Night Loni Anderson's cause of death revealed Nikki Bella Says ...

It appears this Tyrannosaurus was about 13-15 years old, two-thirds adult size, 25 feet (7.6 meters) long and 3,500 pounds (1,600 kg). T. rex was fully grown at around 18-21 years.

For the next week only, Tina the Tyrannosaurus rex chatbot will speak to users of National Geographic Kids Facebook pages in South Africa, Australia, New Zealand, and the United Kingdom.

The Tyrannosaurus rex had some pretty sick things going for it. Sure, their arms were a little embarassing, but they made up for those with a five-foot-long skull and the ability to eat up to 500 ...

While T. rex was the largest of tyrannosaurs, there are many other species that came before it — and they range in size, shape, color and texture, from the ferocious to the feathered.

Kids Discover Tyrannosaurus Rex Fossil in North Dakota The bones belonged to a dinosaur that was likely a teenager when it died. Only a handful of young T. rex skeletons have ever been found ...

Three kids hiking in North Dakota made a larger-than-life discovery: a rare teenage Tyrannosaurus rex. The fossil specimen, now nicknamed "Teen Rex," could shed light on how the mighty Cretaceous ...

Meet Victoria, the 66-million-year-old Tyrannosaurus rex, on display at the Arizona Science Center She's 66 million years old and making her world debut here in Phoenix!

Make way for Tyrannosaurus rex, everyone’s favorite killer. A new show at the American Museum of Natural History places T. rex amid a global family of prehistoric predators.

Behold the fearsome Tyrannosaurus rex — all swaddled in a cozy Christmas sweater. The replica T. rex at the Natural History Museum in London is an enormous, ferocious-looking beast that was ...