A male guppy looks good when he looks different.
The mating habits of these tiny, colorful fish may be revealing something broader about the animal kingdom, and perhaps even our own desires.
Consider the wisdom of the flock.
After Google suggested PigeonRank was at the root of its search function, a group of researchers put a small flock of the birds to a different classification test in real life.
Can animals find the beat in music and dance along?
Scientific testing has zeroed in on the advantages of a zebra’s striped coat.
How the zebra got its stripes is not only a just-so story, but an object of scientific inquiry. New research suggests that stripes help zebras evade biting flies and the deadly diseases they carry.
A new statistical test lets scientists figure out if two groups are similar to one another.
A new statistical test lets researchers search for similarities between groups. Could this help keep new important findings out of the file drawer?
Hormone signals help ready worker mole-rats to treat pups as their own.
Worker naked mole-rats take care of their colony's young even though they aren't the pups' actual parents. New research suggests the queen gets them ready via hormones in her poop.
African elephant bull.
Cells that transmit nerve impulses in the part of elephants' brains responsible for functions such as learning and memory are structured differently from those of any other mammal.
You can’t resist the yawn.
Everybody does it, but why? Scientists aren't really sure if exhaustion, stress or some other social factor is at the root of yawning – and how it can be so contagious.
Starting with two simple sheepdog rules, the robot then began to display new, unprogrammed behaviour.
Seagulls travel together in groups, but prefer to be alone when they feel sick.
Birds can usually sense when they are not feeling well and like many other creatures, seem to seek out-of-the-way places to be alone.
anetapics / shutterstock
Our work with the BBC's Animals With Cameras showed one family of meerkats had excavated a huge tangle of tunnels.
Magpies playing together often link feet and lie on the ground.
Danielle, the Magpie Whisperer
Magpies have long memories, and human behaviour towards them largely determines how they respond
Let’s just go our separate ways.
Sometimes a dog can have very good reasons for hating its humans.
How do they each know what to do?
Researchers identified simple behavioral rules that allow these tiny creatures to collaboratively build elaborate structures, with no one in charge.
Next best thing to a hidey-hole box?
Twitter recently blew up with posts wondering about the feline fascination with taped squares on the ground. An animal behavior expert explains it's not magic that draws Fluffy to the #CatSquare.
Dr. Tanya Pennell
New research into how wasps divide up their jobs shows how economics can be key to understanding animal behaviour.
Sulphur-crested cockatoos form long-term pair bonds, perhaps explaining their emotional intelligence.
For a long time it was not believed that animals were even capable of feeling pain, let alone complex emotions. We now know that is far from the truth.
Bonobo Jasongo at Leipzig Zoo has a hunch about what you’re thinking.
Realizing that others' minds hold different thoughts, feelings and knowledge than your own was thought to be something only people could do. But evidence is accumulating that apes, too, have 'theory of mind.'
I can definitely see you.
Man-made noise changes the way animals respond to danger – but prairie dogs have a surprising reaction.
Latrodectus hasseltii, the redback spider.
Toby Hudson/Wikimedia Commons
Be thankful you aren't a male redback spider.