Animals

Deer antler rubs and hoof scrapes change how parts of the forest reflect short-wavelength light, perhaps leaving a glowing signal

A large dataset shows some dog stereotypes are based in reality, and others might be unfair characterizations

A pet cow named Veronika uses a tool in a surprisingly sophisticated way—possibly because she has been allowed to live her best life

Ribbon worms can grow to enormous lengths, and one named Baseodiscus the Eldest is showing how little we know about them—including how long they live

Spiders scare off predators by seemingly supersizing themselves

Scientists are just beginning to understand the signals that determine the length of dogs’ ears

Florida’s iguanas are an introduced species, and they aren’t used to the chilly temperatures the state is currently experiencing

The naturally mummified remains of dozens of cheetahs hidden deep in caves in Saudia Arabia shed light on where the animals lived in the past, which might inform rewilding efforts

Horses that were presented with cotton pads soaked in a scared human’s sweat showed more signs of fear themselves

New research links same-sex behaviors in nonhuman primates to the evolution of complex social structures

Why flu cases are spiking, how AI predicts disease from your sleep, and what surprising biomechanics lie behind woodpeckers’ powerful pecks.

The very, very long-lived Greenland sharks were long thought to be practically blind. But a new study finds that they not only can see but also maintain their vision into old age