Frogs invest in cognitive capacity to avoid predators—up until there are too many hungry snakes around for the evolutionary strategy to pay off.

A study yields insights into how predator-prey dynamics may shift with climate change, but many questions remain.

Mongolian rodents join the ranks of earthworms and beavers as known ecosystem engineers.

Six GPS-tracked wild cats wandered closer to Santa Cruz, California, and surrounding towns as human activity died down under shelter-in-place orders last March.

In areas where gray wolf populations have grown, motorists have fewer collisions with deer, likely due to the predators keeping deer away from roadways.

As some conservationists and researchers begin to return large carnivores to areas where they once roamed, scientists intensify efforts to study the ecological roles of predators.

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. 

Monarch and queen caterpillars store toxic compounds from their milkweed diet to ward off predators into adulthood, a new study suggests.

Ambush predators are more likely to have vertical slit pupils, while foraging animals tend to have horizontal ones, a study shows.

Microscopic analysis of carnivorous dinosaur teeth reveals specialized serrated edges.

The mollusk’s flashy tactics scare off predators.