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Invasive Species

A nine-banded armadillo in Costa Rica. The Mexican long-nosed armadillo, which is the only armadillo species found in the United States, used to be considered the same species as the nine-banded armadillo.

An Armadillo Found in Ohio Is the Latest Surprise in the Armored Animals’ Expansion North. Where Are They Now, and What’s Driving Their Movement?

Typically spotted in the South and Southeast, the creatures have been reaching increasingly distant states like North Carolina, Virginia and Illinois as winters become milder

A nabarlek on Augustus Island, an uninhabited island in Western Australia. This is not one of the newly discovered wallabies.

Australia’s Second-Smallest Rock-Wallaby Reappears in a Region Where It Had Not Been Seen for 50 Years

The endangered nabarlek is not easy to find and difficult to distinguish from similar species. But a research team made new detections of the animals that offer “good news for their long-term survival”

Researchers have spent the past two years studying the interactions between common octopuses and blue crabs and perfecting breeding techniques.

Blue Crabs Have Taken Over the Adriatic Sea. To Fight Them Off, Italian Researchers Just Released Thousands of Baby Octopuses

Although prized in the United States, the crustaceans have been decimating ecosystems and the fishing industry in Italy. Experts hope that an army of natural predators—common octopuses—can help contain the invasive species’ spread

Redback spiders live throughout Australia.

Here’s Why These Male Spiders Sacrifice Themselves by Somersaulting Into Females’ Fangs While Mating

A new study suggest that even strange, complex animal behaviors can have a relatively simple genetic basis

Nine Lives eluded capture for three years.

Notorious Feral Cat That Feasted on Rare New Zealand Ducks Captured After Three-Year Hunt

The gray tabby, known as Nine Lives because it eluded capture so many times, had devastated efforts by conservationists to reintroduce the birds to the wild

A sihek, or Guam kingfisher, chick born at the Smithsonian's National Zoo and Conservation Biology Institute

Four Rare Guam Kingfisher Chicks Hatch at Virginia Facility, Making an ‘Incredibly Valuable’ Addition to the Small Population of Extinct-in-the-Wild Birds

The species, also known as the sihek, was wiped out from its native Guam and kept alive in captivity. Conservationists released some birds on Palmyra Atoll in 2024, and they have been thriving so far

Biologists with the California Department of Fish and Wildlife are working hard to eradicate nutria from the state.

Large Invasive Rodents Are Wreaking Havoc in California. New Research Suggests Someone Deliberately Introduced Them

Genetic testing revealed that nutria living in California since 2017 are most closely related to a population in central Oregon—too far for the creatures to have traveled on their own

Nearly 200 hippos are estimated to roam in Colombia.

Colombia Plans to Euthanize Dozens of ‘Cocaine Hippos,’ Descendants of Animals Brought by Notorious Drug Trafficker Pablo Escobar

If nothing is done to control the invasive creatures, officials estimate the population could grow to 1,000 animals by 2035. So, they aim to cull about 80 individuals later this year

The larvae feed on the leaves of elm trees in a distinctive zigzag pattern.

This Invasive Wasp Is Wreaking Havoc on Elms in North America—and the Damage May Soon Spread to Other Trees

Elm zigzag sawflies can munch on plants beyond their preferred elm trees when foliage isn’t available, a new study suggests

Crabs not yet at the molting stage are thrown back into the Venice lagoon.

Coastal Cities of Europe

Can Venice’s Iconic Crab Dish Survive Climate Change?

For more than 300 years, Italians have fried soft-shell green crabs, called moeche. But the culinary tradition is under threat

Spotted lanternflies have spread to nearly 20 states since 2014.

Bees Are Turning the Sticky-Sweet Secretions of Spotted Lanternflies Into Honey—and Some People Love the Smoky-Smelling Stuff

The invasive insects have been spreading across the United States for over a decade, leaving behind poop that bees are transforming into a less sweet, sometimes savory, honey

A Laysan albatross checks on its egg.

Stream the Beautiful Highs and Violent Lows of Albatross Life With This New 24-Hour Camera on Midway Atoll

You can see the large white seabirds dancing, preening, feeding and raising young—though the live feed might show a dark side of island living, too, with potential predation from invasive mice

In a new study, 79 percent of black-spotted pond frogs successfully consumed the northern giant hornet.

‘Murder Hornets’ Might Strike Terror in Humans, but These Frogs Can Eat Them for Lunch

Watch a pond frog effortlessly devour the northern giant hornet, the largest hornet in the world, while sustaining stings that are deadly to many animals

A spiny-tailed iguana on Clarion Island

Iguanas Are Native, Not Invasive, on This Mexican Island, DNA Study Suggests, Rewriting Conservation Ideas

The spiny-tailed iguanas of Clarion Island predate human presence in the Americas by tens of thousands of years, researchers say

Bat? Meet rat. Scientists recorded brown rats snatching bats from the air and eating them.

Rats Are Snatching Bats Out of the Air and Eating Them—and Researchers Got It on Video

Rodents in northern Germany were spotted using two different hunting strategies at major urban bat hibernation sites

Culiseta annulata, the mosquito species discovered in Iceland this month.

Iceland Is No Longer Mosquito Free. Is Climate Change to Blame?

It was previously thought to be one of the last places on Earth without the insects

An adult spotted lanternfly on a leaf in Pittsburgh

Swarm of Invasive Spotted Lanternflies Shows Up on Weather Radar Around Washington, D.C., Meteorologists Say

Using a variety of radar characteristics, scientists suggest the irregular detection was caused by bugs, instead of normal weather patterns

Joro spiders are essentially harmless to humans and pets, but scientists are concerned about their impact on native species.

Scientists Want Your Help to Track the Spread of Invasive Joro Spiders at Great Smoky Mountains National Park

The invasive arachnids were first spotted in the park last year, and now, researchers hope to keep tabs on when and where they occur

The remotely controlled robotic rabbits have been placed at various undisclosed locations in South Florida to see how well they fool the invasive snakes.

‘Robo-Bunnies’ Are the Newest Weapon in the Fight Against Invasive Burmese Pythons in Florida

Scientists are experimenting with robotic rabbits in hopes of luring the destructive snakes out of hiding so they can be euthanized

Researchers discover the secret behind Burmese pythons' ability to fully digest the bones of their prey.

Researchers Discover the Trick That Allows Burmese Pythons to Digest the Bones of Their Prey

Special intestinal cells collect excess minerals into particles the snakes can poop out, according to a new study

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