In a bid to look unattractive to predators, the nestlings not only look like caterpillars but move just like them, too.
The revised look at bird development shows some surprising relationships and also details how characteristics such as birdsong evolved.
The lack of teeth in all living birds can be traced back to a common ancestor who lost its choppers about 116 million years ago.
The earliest known horned dinosaur from North America was not exactly kissable, given its spiky cheekbones and sharp beak. Continue reading →
The harlequin filefish smells like coral instead of dinner to things that would like to eat it.
No wonder this man wasn't feeling well: The worm causes sparganosis, meaning inflammation of the body's tissues in response to the parasite. Continue reading →
Some spiders are such ant wanna-be's that they resemble, act like, and hang out with ants, even forming mini colonies to foil ant-hating predators.
Researchers have found the roots of the special relationship between humans and cats.
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