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Study reveals the wolf within your pet dog

Wolves lead and dogs follow - but both are equally capable of working with humans, according to research that adds a new twist in the tale of how one was domesticated from the other.

Dogs owe their cooperative nature to "the wolf within", the study, of cubs raised alongside people, suggests, according to BBC.

But in the course of domestication, those that were submissive to humans were selected for breeding, which makes them the better pet today.

How WOLVES can co-operate with humans just like dogs: Ferocious canines are as capable of following handler's commands - but they show more initiative than domesticated pets

Wolves reared by humans can learn to cooperate with their handlers just as well as domesticated dogs, a new study has found.

Wild wolves work together to hunt, rear their offspring and defend their territory, traits which have been passed down to modern dogs - their closest relatives.

Experts tested the extent to which dogs and grey wolves collaborate with humans in order to solve a range of tasks, according to Daily Mail.

They found that both dogs and wolves cooperate intensively and equally successfully, but wolves show more initiative where dogs follow a human's lead.

The experiment, conducted at the University of Veterinary Medicine Vienna, looked at how wolves and dogs cooperated with humans to solve specific tests.

Dinosaurs were thriving before asteroid strike that wiped them out

Dinosaurs were unaffected by long-term climate changes and flourished before their sudden demise by asteroid strike.

Scientists largely agree that an asteroid impact, possibly coupled with intense volcanic activity, wiped out the dinosaurs at the end of the Cretaceous period 66 million years ago, according to Science Daily.

However, there is debate about whether dinosaurs were flourishing before this, or whether they had been in decline due to long-term changes in climate over millions of years.

Previously, researchers used the fossil record and some mathematical predictions to suggest dinosaurs may have already been in decline, with the number and diversity of species falling before the asteroid impact.

Swifts are born to eat and sleep in the air

"They eat and sleep while they are airborne. This is something that researchers have believed since the 1950s, and now we can show that it's true," says Anders Hedenström, professor at the Department of Biology at Lund University.

Three years ago, the same research team at Lund University observed that within the species common swift, (Apus apus) there were individuals that live in the air for up to ten consecutive months without landing -- a world record for being airborne.

Frog the size of a human FINGERNAIL discovered in Arizona lived alongside the dinosaurs 216 million years ago

Ancient relatives of modern-day frogs were the size of a fingernail and lived alongside the dinosaurs 216 million years ago.

Bone fragments the size of an eyelash were found embedded in rock and experts believe they date back to the Late Triassic. 

The section of hip-bone, known as the ilium, belongs to a group of amphibians known as Chinle frogs - a long-extinct branch of modern frogs, according to Daily Mail.

Palaeontologists from Viginia Tech identified the fossil fragments and claim they are the oldest known frogs.

The fragments are packed into rock and are smaller than a fingernail, according to the researchers.