Reproduction
Follow the Soap Opera-Worthy Relationship Drama of the World's Oldest Common Loons
Called ABJ and Fe, the duo mated every spring for 25 years—but they split up in 2022. Now, they’re back at their Michigan breeding grounds, showing no signs of getting together
Five Shocking Animal Hybrids That Truly Exist in Nature, From Narlugas to Grolar Bears to Coywolves
The now-famous “virgin” stingray Charlotte is not having hybrid babies, scientists say. But in nature, distinct species sometimes interbreed to produce surprising offspring
Whales That Go Through Menopause Live Longer and May Help Care for Grandchildren
Alongside humans, five species of toothed whales are known to experience menopause. A new study suggests they evolved the trait to increase their lifespan
Ten Wild Facts About Octopuses: They Have Three Hearts, Big Brains and Blue Blood
These bizarre creatures have been around for hundreds of millions of years, and for humans, they’ve inspired horror, admiration and culinary prestige
A Female Stingray That Hasn't Had a Mate in Eight Years Is Mysteriously Pregnant. Is a Shark the Father?
Though the round stingray, named Charlotte, shares her aquarium tank with two male sharks, experts say it is impossible for a shark to impregnate a ray
Biologists Discover Four New Octopus Species in the Deep Ocean Off Costa Rica
One species was found brooding eggs near low-temperature hydrothermal vents, a rare sight that could unlock new information on deep-sea cephalopods
Mysterious Bass Sounds Irking Florida Residents Might Just Be Fish Mating Loudly
The Tampa community raised money to fund an investigation, and now, a local scientist will install underwater microphones to look for the source of the racket
World's First IVF Rhino Pregnancy Could Save a Nearly Extinct Subspecies
Only two northern white rhinos remain, but the new reproductive breakthrough may pull them back from the brink of erasure
See the 'Adorable'—and Deadly—Black-Footed Cat at a Utah Zoo
Eight-month-old Gaia is part of a breeding program for her vulnerable species, which is considered the "world's deadliest cat"
Why Most Pregnant People Experience Morning Sickness—and How It Could Be Treated
A hormone produced by the fetus may induce nausea and vomiting during pregnancy, a new study finds
Bluefin Tuna Get Busy Off North Carolina
The extremely valuable fish likely spawn in a patch of the Atlantic Ocean called the Slope Sea
This Bat Uses Its Extra Long Penis Like an Arm While Mating
Serotine bats are the first mammals known to mate without penetration, new research suggests
Wild Female Chimpanzees Go Through Menopause, Study Finds
Until now, menopause had not been documented in wild, non-human animals, except for a few species of toothed whales
Why the National Zoo Is Saying Goodbye to Its Giant Pandas
Staff remain hopeful that members of the threatened species will be back in Washington in the near future
Why 'Hot Springs' Draw the World's Largest Gathering of Deep-Sea Octopuses
Some 20,000 octopuses congregate near an inactive underwater volcano off California's coast, using heat from thermal springs to hatch their eggs faster
Ospreys Breed in Ireland for the First Time in More Than 200 Years
The birds were driven to local extinction in the 18th century, but the new chicks provide hope for a comeback amid reintroduction efforts
Can Peacock Vasectomies Save This Florida Town?
Residents of Pinecrest don't want to kill the colorful birds, but they do want to keep their growing population in check
At the 1939 World’s Fair, Robert Latou Dickinson Demystified Pregnancy for a Curious Public
The gynecologist and sculptor’s “Birth Series” broke barriers, but how do his views on abortion, race and women’s health square with what we know today?
Crows and Magpies Snatch Anti-Bird Spikes to Build Their Nests
Birds in Europe are prying up the metal barbs, meant to repel them from roosting on buildings, and using the devices as nesting material
FDA Approves First Over-the-Counter Birth Control Pill
Experts say the decision will increase access to safe and effective contraceptives for millions of Americans
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