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Living lunch box? Iceland orcas are unexpectedly swimming with baby pilot whales, but it's unclear why.
By Marina Wang published
Newborn pilot whales have been spotted mysteriously swimming among pods of orcas. Scientists are trying to puzzle out how the pilot whale calves got there and what happened to them.

Scientists solve mystery of how orange cats got their coats — and why so many are male
By Patrick Pester published
Researchers have discovered how orange cats got their coats — and why so many of them are male. The coat color comes from a genetic mutation on the X chromosome of orange, calico and tortoiseshell cats.

Half-a-billion-year-old 3-eyed sea creature dubbed 'Mosura' breathed through big gills on its butt
By Patrick Pester published
Researchers have discovered an ancient moth-like sea predator in a treasure trove of museum fossils in Canada. The half-a-billion-year-old creature, Mosura fentoni, reveals that Cambrian arthropods were more diverse than previously thought.

Reptiles evolved earlier than we thought, newly discovered claw-mark fossils suggest
By Jess Thomson published
New fossilized tracks made by an ancient reptile indicate that these animals evolved tens of millions of years sooner than scientists first thought.

Images capturing a starving tiger, fighting bison and pit of vipers honored in environmental photography awards
By Jess Thomson published
Winners and runners-up of the Prince Albert II of Monaco Foundation's 2025 Environmental Photography Award revealed.

Hoatzin: The strange 'stinkbird' born with clawed wings that appears to be an evolutionary 'orphan'
By Lydia Smith published
This weird blue-faced, red-eyed bird smells so bad predators won't eat it.

What's the difference between apes and monkeys?
By Elana Spivack published
Primatologists explain how apes and monkeys differ.

Big cats quiz: Can you get the lion's share of these questions right?
By Sascha Pare published
Quiz How good is your knowledge of big cats? Let's find out if you've got the eye of the tiger in this quiz.

Watch elusive New Zealand snail lay an egg through a 'genital pore' in its neck
By Pandora Dewan published
Very little is known about Powelliphanta augusta, an elusive snail species threatened with extinction. The new footage is the first time their bizarre egg laying behavior has been captured on camera.

Invasive Asian needle ants are surging in US Southeast — and their bite can trigger anaphylaxis
By Sascha Pare published
Asian needle ants found in the southeastern states of the U.S. have been spreading north and west for years, but experts now consider them to be a medically important pest and urge caution.
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