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Prey and Predators

Out on safari, this tired lion lets out a big yawn after an early morning hunt.

Lions, Lions and Lions, Oh My! 15 Photos of the Most Majestic Big Cats Found Throughout Africa

Ranging from cubs to adults, this selection of shots from the Smithsonian Magazine Photo Contest showcases the apex predator of the savanna

Mountain lions change how deer behave, potentially preventing deadly deer-vehicle accidents.

Pumas Might Be Making Your Drive Home Safer. When the Predators Are Around, Deer Tend to Avoid Roads, Preventing Some Collisions

In Washington’s Olympic Peninsula, the wild cats’ presence corresponded with a 67 percent drop in the likelihood of a deer-vehicle crash and a 76 percent overall decline in the number of wrecks during a five-year period, according to a new study

The dominant female wolf of Yellowstone's Canyon pack on February 26, 2015

Rooted in the American West: Food, History and Culture

Yellowstone Is Among the World’s Best Places to See Wild Wolves. Here’s the Story of the Animal Called Both ‘Public Enemy’ and Cultural Icon

A century ago, resident wolves were eliminated from the park. In 1995, biologists brought them back, marking a historic reintroduction of a top carnivore

This illustration shows an ichthyosaur biting a pterosaur, with a pliosaur preparing to attack from below.

Rare Fossil Reveals a Three-Tier Food Chain Frozen in Time: a Pterosaur Eaten by an Ichthyosaur Eaten by a Pliosaur

Uncovered in part by amateur fossil hunters in Australia, the fossil preserves a unique look at prehistoric predatory dynamics

A 52-foot-long model of a female Otodus megalodon is suspended from the ceiling at the Smithsonian National Museum of Natural History.

Predatory Sharks Grew to Enormous Sizes in Prehistoric Times. These Five Strategies Helped Them Get So Big

By cannibalizing their siblings in the womb or avoiding meat-eating pliosaurs, fearsome carnivores like the megalodon ballooned to proportions that would dwarf any shark alive today

Illustration of what Praearcturus gigas may have looked like

After Decades of Debate, Scientists Say These Fossils Belong to the Largest Known Scorpion, Which Lived 415 Million Years Ago

Researchers have wondered whether Praearcturus gigas was a giant crustacean called an isopod or some other creature. A new analysis of museum specimens suggests that it was a scorpion that stretched more than three feet long

Enormous dinosaurs like the Brachiosaurus in this illustration evolved multiple times over millions of years.

What Was the Biggest Dinosaur? Fragmentary Fossils Make It Hard to Tell

Pinning down the most titanic of the large sauropod dinosaurs is not an easy task, since the odds were generally against the biggest ones being buried and preserved

In February 2020, naturalist guides Lizardo Proaño and Juan Carlos Narváez photographed a harvestman eating a live frog during a night hike at Mashpi Lodge in Ecuador.

Daddy Longlegs Seem to Hunt Frogs in South America, Revealing the Gangly Arachnids as Overlooked Predators

A new study suggests that harvestmen actively attack the slippery amphibians, rather than just scavenging them. The findings hint that the spineless creatures have a more complex relationship with vertebrates than previously thought

A female lynx named Ulcera carries a rabbit to a water trough and dunks it on July 16, 2024. This incident was one of eight that researchers recorded among lynxes in central Spain.

Camera Traps Reveal Iberian Lynxes Soaking Their Prey, a First-Ever Discovery Among Carnivores

Scientists speculate that the wild cats are trying to improve hydration or ease their cubs’ transition to solid food. The finding points to resilience in one of the world’s most endangered felines

Spinosaurus was the largest and most aquatic of the spinosaurs, a group of dinosaurs with crocodilian snouts.

Was Spinosaurus Really a ‘Hell Heron’? Digging Into the Star of Netflix’s ‘The Dinosaurs’

With an incredible sail and heavy bones that might have acted as ballast, Spinosaurus seems primed for snatching fish. The creature has long captivated the public, from its early mysteries to the recent discovery of a new species

Jaguars in Porto Jofre, Brazil, support a lucrative tourism industry, leading conservationists to argue that the big cats are most valuable when they’re alive.

In the World’s Best Place to See Wild Jaguars, Residents Are Using the Big Cat’s Appeal to Reach Conservation Goals

Brazil’s Pantanal region has the highest jaguar density on Earth, drawing camera-toting visitors to its riverbanks. Despite overtourism concerns, one enclave may offer a model for how to protect the charismatic apex predator

Based on Andrewsarchus’ skull size and the skull-to-body-size ratios of other hoofed predators called mesonychids, scientists estimated in 1924 that the beast was more than 12 feet long and about 6 feet tall. Reassessments of Andrewsarchus’ evolutionary tree, however, suggest this estimate is inaccurate.

This Giant Carnivore Ran on Hooves. Scientists Are Investigating Its Massive Skull and Crushing Teeth to Decipher the Beast’s True Nature

For more than a century, paleontologists have been piecing together how the mysterious predator Andrewsarchus is related to other mammals, like the extinct “hell pigs” and “wolves with hooves”

A gray wolf in California.

A Gray Wolf Visited Los Angeles County for the First Time in a Century, Marking a Major Milestone in the Species’ Recovery

The 3-year-old female wolf, called BEY03F, is probably looking for a mate

Scientists found that fringe-lipped bats have a roughly 50 percent success rate when trying to capture prey.

These Lazy Bats Are Super-Efficient Killers That Carefully Conserve Energy to Attack at a Moment’s Notice

Wild fringe-lipped bats spend just one-tenth of the night in flight, but they can precisely snatch a calling frog and nab prey that rivals their own size

Stoats, also often known as ermines, are carnivorous mammals in the weasel family. Two stoats are the mascots of the 2026 Winter Olympics in Italy.

What Is a Stoat? Learn Five Fun Facts About the Adorable Weasels Chosen as the Olympic Mascots

Milo and Tina, a pair of sibling stoats, are representing this year’s winter games in Italy