Dolphins sponge up culture: study

Bottlenose dolphins that have learnt to use sea sponges as hunting tools form cliques with others that do the same -- the first evidence of animal grouping based on mutual interest, a study said Tuesday.

New discovery places turtles next to lizards on family tree

(PhysOrg.com) -- Where do turtles belong on the evolutionary tree? For decades, the mystery has proven as tough to crack as the creatures' shells. With their body armor and retractable heads, turtles are such unique creatures ...

Geologist analyzes earliest shell-covered fossil animals

The fossil remains of some of the first animals with shells, ocean-dwelling creatures that measure a few centimeters in length and date to about 520 million years ago, provide a window on evolution at this time, according ...

Tasmanian devils born on Australian mainland in rewilding push

Tasmanian devils have been born in the wild on Australia's mainland 3,000 years after the marsupials disappeared from the continent, conservation groups said Tuesday, raising hopes that a major rewilding effort could succeed.

Power struggles are best kept out of the public eye

For animals, prevailing in a fight affects their likelihood of winning future conflicts. The opposite is true of losing a fight. The sex hormone testosterone is often believed to mediate this "winner effect". Researchers ...

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