Animals

Clicklike noises made by a small species of shark represent the first instance of a shark actively producing sound

A riotous photography collection from a recent underwater mission off the coast of Chile shows new and fascinating deep-sea creatures—including a “mystery mollusk,” a bioluminescent jellyfish and a “sea pig”

In this week’s news roundup, two NASA astronauts finally return to Earth after nine unexpected months in space, gray seals hold their breath for more than an hour, and penguin poop panics krill.

What we learned about ape and human cognition from Kanzi the bonobo, who died this week

A genetic analysis reveals that Fiji’s iguanas are most closely related to lizards living in North America’s deserts. How is this possible?

The EPA rolls back regulations, NASA launches two exciting missions, and we discuss the surprising way whale urine moves nitrogen across the ocean.

Dogs excel at finding spotted lanternfly eggs in lower-level infestations

As bird flu outbreaks continue to affect animals, experts answer questions about keeping pets and their owners healthy

In the U.S. 42 species of birds have low and steeply declining populations that put them on the brink of disaster, scientists say

A new report finds that butterfly populations in the continental U.S. declined by one fifth between 2000 and 2020—but it’s not too late

Animal emotions—including joy—may be key markers of conscious beings

In this week's news roundup, we dig into measles misinformation, ozone recovery and new findings on using nasal cartilage to treat knee injuries.