The 150-pound Raptorex “was running things down, dispatching them with its powerful jaws, and clutching them with its two-fingered hands”—the same hunting strategy that apparently worked for 6-ton T. rex.

If a worker ant dares to reproduce in the presence of the queen, her sisters will smell her attempt and attack, according to a new study.
Typically, only queens produce offspring in an ant colony, and males die after mating. The sons and the daughter queens fly away, with hopes of reproducing elsewhere, while the [...]

Bonnie’s whistling isn’t so surprising to her caregivers. The 140-pound (63.5-kilogram) orangutan at the National Zoo in Washington, D.C., has been whistling for about two decades.
Now a new study suggests that the sounds she makes could hold clues about the origins of human language.
“The assumption is that someone was whistling and she probably picked it [...]

The first scientific study to find envy in non-primates affirms what many already know: dogs can get jealous.
“Everybody who has a dog at home probably [suspects] that dogs can be very jealous of other dogs and also of people,” said lead author Friederike Range of the University of Vienna, Austria.
In experiments with 43 dogs, [...]

Using hairs from woolly mammoths, scientists have sequenced an extensive genome of these elephant cousins, a new report says.
The development brings researchers a step closer to “resurrecting” the extinct species via cloning, though so many technical obstacles stand in the way that some experts doubt it could ever happen.
(See “Mammoths to Return? DNA Advances Spur [...]

Siberia’s last woolly mammoths descended from North American—not exclusively Eurasian—stock, according to new research.
Scientists studying DNA from the remains of 160 of the animals found the ancient beasts migrated back and forth between Eurasia and Alaska several times over hundreds of thousands of years.
Cousins of present-day elephants (learn more), woolly mammoths are believed [...]