For months, the caterpillar scavenges spider webs for scrapped insect body parts to cover its protective case. Later, that case will serve as its cocoon.
The undersea world can host a symphony of fish grunts, hums and growls. Now add tooth-clacking sharks to the score.
This little-known allergy, known as alpha-gal syndrome, is potentially deadly. Here’s what we know about it — and how to avoid the tick bites that seem to cause it.
These findings could help reveal when and why falling for optical illusions evolved in animals.
Brain activity during vocalizing in small parrots — called budgerigars or parakeets — shows a similar pattern to what’s seen in people.
Human activities threaten the survival of many freshwater fish species. Research is now pointing to how we can best overcome those threats.
The iguanas' epic 8,000-kilometer trip — one-fifth of Earth’s circumference — may be the longest made by a flightless land vertebrate.
Spinosaurus fossils are challenging the longstanding claim that ancient dinosaurs were never fully aquatic. And some paleontologists still aren’t convinced.
Taste buds on those legs may explain why northern sea robins are so good at finding food that is buried in the sandy seafloor.
