Animals

In just 48 hours, salps can reach maturity, making them the fastest-growing multicellular animals on Earth, with a significant impact on ocean health.

Meowing, sticking their paw under the door or pawing at the door are just some of the strange things cats do around closed doors. But why?

New research gives insight into when the ancestor of all living things lived, and it's earlier than we thought.

Beachgoers found a rare oarfish off California two days before an earthquake, mirroring folklore that says the deep-sea creatures are "doomsday fish."

The sea walnut, a type of comb jelly that has become invasive in parts of Europe and Asia, can transform from a sexually mature adult back into its larval form when times are tough.

A team of archaeologists recently excavated the first well-preserved mastodon bones ever found in Iowa, including the prehistoric animal's skull.

Using fossil evidence and genetic dating, geneticists and paleontologists have backed strikingly different candidates for the world's first animal.

The smallest species of anteater grows to just 14 inches, including its tail — but it packs a hefty punch when threatened.

A new study has cleared up misconceptions about the extinct dodo, identifying the reference specimen for the species and showing they were fast and powerful.