A global decline of large carnivores has motivated scientists to understand the animals’ ecological roles, and consider whether reintroducing them can help restore ecosystems.

The release of gray wolves in Yellowstone decades ago still stands as one of the few examples of a predator reintroduction, and the lessons learned continue to be debated. New projects aim to do it again.

Data on vertebrate species that have become, or are likely to become, extinct reveal plant eaters are most under threat.

A roughly 99-million-year-old piece of amber from northern Myanmar contains the skull of what appears to represent the smallest known dinosaur of the Mesozoic era.

The invertebrate predators prey on and lay their eggs near emerging tadpoles, potentially threatening the conservation of endangered frogs, researchers find.

Spotted coin spider colors are a Swiss army knife of deception, bringing food closer, and keeping assailants at bay.

Osprey numbers are recovering after a drop in contaminants in the Delaware Estuary.

In a case of acoustic deception, caterpillars mimic bird alarm calls to defend themselves.

The Jurassic predator Razanandrongobe sakalavae used its colossal, ragged teeth to rip through the muscles and bones of its prey.