After a 97-year-old Galápagos tortoise named Mommy gave birth, David Muir reports on the debut of four critically endangered Western Santa Cruz Galápagos tortoises at the Philadelphia Zoo.

An adorable golden retriever named Bailey was spotted using a tiny pink purse to carry her new bone back home in Tampa, Florida.

Meerkats at the Gelsenkirchen Zoo in Germany enjoyed an Easter egg hunt. The colorful eggs were filled with some of their favorite treats, including mealworms.

The Zurich Zoo says a 19-year-old Asian elephant has given birth to a male calf

A diver filmed an affectionate encounter with a Maori octopus that was seen gently embracing her camera near a pier in Rye, Australia.

A bison was spotted enjoying a satisfying scratch against a signpost in the snowy landscape of Yellowstone National Park.

The wildlife filmmaker explores everything from emperor penguins' surprising friendships to the grit of gentoos and rockhoppers in a new National Geographic series.

A new global survey finds that endangered sea turtles show signs of recovery in a majority of places where they’re found worldwide

A juvenile colossal squid was spotted in its natural environment alive at a depth of almost 1,100 feet, according to the Schmidt Ocean Institute.

A team of scientists took a state-of-the-art research vessel to the Antarctic and found a colossal squid lurking in the depths there.

A colossal squid was filmed in its natural environment by scientists for the first time, according to the Schmidt Ocean Institute.

Authorities have rescued a total of 152 dogs living in “extremely poor” conditions from a house in Utah, officials said.

Authorities have rescued a total of 152 dogs living in “extremely poor” conditions from a house in Utah, officials said.

At a mall in West Hartford, Connecticut, a bear that officials believe was coming out of hibernation charged through the lot at a full sprint, sending some inside to take cover.

The Trump administration plans to rewrite part of the Endangered Species Act that prohibits harming the habitats of endangered and threatened species

Moose fans from across the world can tune into a livestream this week to watch Swedish moose embark on their summer migration.

A 2-year-old who had been missing in a rural Arizona area for 16 hours was found by a rancher's dog, according to the Yavapai County Sheriff's Office.

After a 5.2 magnitude earthquake struck Southern California, elephants at the San Diego Zoo reacted instinctively, forming what is known as an "alert circle" to protect their little ones.

Swedish slow TV hit “The Great Moose Migration” has become a phenomenon

Marshall Garrett, 38, is wanted by police after his dogs mauled his neighbor to death on the very day he was warned they were loose, court records show.

Spanish police have arrested two people in connection with the sale of exotic felines on the internet

Swedish slow TV hit “The Great Moose Migration” has become a phenomenon

Elephants at the San Diego Zoo Safari Park rushed to protect their young as Monday's 5.2 magnitude quake shook California.

Animal lovers now have a place to hang out with the “it” animals of the moment

The humpback whale raised out of the water just feet from the boat, rolling and spy hopping for its fans.

The recent claim the long extinct dire wolf was resurrected made headlines around the world. But bioethicists and ecologists say there are ethical concerns.

Fatou, the oldest gorilla living in captivity worldwide, is getting ready for her 68th birthday in style

What started as a peaceful morning of gardening in a South Carolina retirement community ended with a woman fighting off an alligator to rescue her husband.

Alexis Cruz said his daughter meeting Chip made him “the coolest papi that day."

The Zurich Zoo's beloved gorilla of more than 40 years has been put down

ABC News’ Mireya Villarreal gets exclusive access inside Colossal Biosciences’ lab where they say they have successfully brought back the dire wolf, but not everyone is convinced.

Colossal Biosciences claims to have brought back the dire wolf from extinction. The species last roamed the Earth 10,000 years ago.

Biotech company Colossal Biosciences said it has brought back the dire wolf, an animal that went extinct 10,000 years ago, through its de-extinction process.

ABC News was given exclusive access to the Dallas laboratory where Colossal Biosciences says it brought the dire wolf back to life – a species that's been extinct for 13,000 years.

The Philadelphia Zoo is celebrating the arrival of four Western Santa Cruz Galapagos tortoise hatchlings, its first in more than 150 years.

A pair of nearly 100-year-old tortoises have welcomed four baby hatchlings at the Philadelphia Zoo.

A Washington family and their dog Gnocchi were transfixed when they spotted a bald eagle peering in the glass door of their lakeside home.

A 97-year-old Galápagos tortoise named Mommy has given birth to four critically endangered Western Santa Cruz Galápagos tortoise hatchlings.

After a fire destroyed the Happy Cat Sanctuary in Long Island, New York, killing the owner and nearly 100 cats, local veterinarians joined forces to treat the injured cats who survived the fire.

A 15-year-old was attacked by a sea lion in Long Beach, California, the teenager shared with ABC News.

Astronaut Suni Williams spent an unexpected nine months in space. When she finally came home, her two dogs were so excited to see her. "Best homecoming ever," she captioned the video.

A 15-year-old was attacked by a sea lion in Long Beach, California, the teenager shared with ABC News.

Ophelia, a North American river otter, was found on March 28 and returned to the NEW Zoo & Adventure Park in Suamico, Wisconsin, the zoo announced on Tuesday.

One of two North American river otters who escaped from a Wisconsin zoo last month has returned home safe and sound.

Phoebe Beltran, 15, was taking a swim test for the cadet lifeguard program in Long Beach, California, when she was attacked.

The eaglets of internet-famous bald eagles Jackie and Shadow have been given names.

Once the blaze was extinguished, police said they found the owner of the sanctuary, 65-year-old Christopher Arsenault, deceased in the home.

An animal sanctuary owner and roughly 100 cats died in a fire on Long Island on Monday, according to officials.

Poppy, the baby pygmy hippo born just before Christmas in 2024, ventured outside for the first time at the Metro Richmond Zoo.

ABC News’ Phil Lipof spoke with content creator Derrick Downey Jr. about rescuing baby squirrels, his bond with their mother Maxine, and his new book “Hand and Paw: Maxine's Tale of Compassion.”