Mammals
Scientifically-speaking there are 11 mammal groups, and most Mammals are warm-blooded, have body hair, give live birth and nurse their young with milk from mammary glands. Check out these articles about all kinds of mammals.
Why Are Orcas Attacking Boats? Experts Weigh In
Leopard Seals Are Apex Predators of the Antarctic
Humpback Whales Have Made an Amazing Comeback From Extinction
The Largest Bat in the World Has a Wingspan Over 5 Feet
Baby Bats Babble With Moms, Hinting at Human Language Development
Fruit Bats Are the Best Pollinators (and Suppliers of Tequila)
Alaska's Kodiak Bear Is One of the Planet's Biggest
What's the Difference Between a Brown Bear and a Black Bear?
How Polar Bears Work
The Eurasian Lynx Can Take Down Prey Larger Than Itself
Clouded Leopard Has Proportionally Largest Teeth of All Cats
How the Snow Leopard Survives Harsh, Frigid Temperatures
Bison vs. Buffalo: What's the Difference?
Lamb vs. Sheep: Do You Know the Difference?
Dik-dik: The Tiny Antelope With the Embarrassing Name
The Happiest Animal on Earth Is the Quokka
What Do Possums Eat? Most Things, It Turns Out
What's It Like Inside a Kangaroo's Pouch?
The Tarsier Is One Weird Primate, and Yes, We're Related
Marmosets Are Tiny, Upper Canopy-dwelling Monkeys
Why Do Gorillas Beat Their Chests?
Squirrels Can Be Left- or Right-handed
Rat vs. Mouse Identification: Which Is Eating Your Cheese?
Chipmunk vs. Squirrel Sizes, Habitats and Characteristics
What Is the Biggest Cat in the World? Top 9 Species in the Wild
Cheetah vs. Leopard: Can You Spot the Differences?
Bunny vs. Rabbit: Is There a Difference?
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The Eurasian lynx (Lynx lynx) roams across a vast range that stretches from the dense boreal forests of Western Europe to the rugged mountains of Central Asia. The largest of all the lynx species, it plays a crucial role as a top predator in its ecosystem.
By Yara Simón
The clouded leopard roams the dense forests of Southeast Asia, from the foothills of the Himalayas to the tropical rainforests of Borneo and Sumatra. These elusive big cats have striking coat patterns and unique adaptations.
By Yara Simón
Often called the "ghosts of the mountains," the elusive snow leopard is one of the most mysterious big cats. Found in the rugged mountain ranges of Central Asia, these beautiful animals are perfectly adapted to their harsh, cold environments.
By Yara Simón
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The cougar, also known as Puma concolor, is one of the most adaptable and widespread cat species in the Americas. You can find this elusive predator, commonly referred to as a mountain lion or puma, across a vast range that extends from the southern tip of South America to the wilds of Canada.
By Yara Simón
The lion, scientifically known as Panthera leo, is an awe-inspiring animal. These majestic big cats symbolize strength, courage, and royalty across various cultures. Primarily found in Africa and a small pocket in India, wild lions play a crucial role in maintaining the balance of their ecosystems.
By Yara Simón
Tigers, scientifically known as Panthera tigris, have striking orange coats, black stripes and piercing eyes. Like other big cats, tigers are at risk. Tiger populations occupy about 5 percent of their historical range, making conservation necessary.
By Yara Simón
Leopards, scientifically known as Panthera pardus, are some of the most adaptable big cats in the world. These sleek and powerful animals live in various habitats, from the savannas of Africa to the mountains of Central Asia.
By Yara Simón
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For the past few years, orcas attacking boats have been making headlines, most recently off the coasts of Spain in the Atlantic Ocean. These incidents, involving a group of orcas known as the Iberian orcas, have been occurring since 2020.
A study at the University of Exeter in January 2020 found that squirrels that strongly favored a paw – whether right or left – perform less well at learning tasks. Ah ... OK. So. Many. Questions.
It's small. It's cute. It's the happiest animal on Earth. The quokka earned the title of world's happiest animal because of its "smile."
By Yara Simón
Get ready to unleash your inner wild as we prowl into the heart of the animal kingdom, where the biggest cat in the world roams. And no, we're not talking about Barivel, the Maine coon who holds the record for the longest domestic cat in the world.
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Whether out of fear or fascination, you might wonder, what is the largest bat in the world? The flying mammals aren't all petite petite creatures.
By Zach Taras
People often use the terms "bison" and "buffalo" interchangeably when referring to large, wooly animals in the Bovidae family. If you drive by one of the two in a national park you may even be inclined to say, "Buffalo, bison — they're basically the same, right?"
By Sascha Bos
Think you can handle cheetah vs. leopard identification? Despite the similar coats, these big cats are built for very different habitats and hunting priorities.
If you're trying to keep opossums out of your trash, you may be asking yourself, "What do possums eat?" Unfortunately, the answer is just about everything.
By Yara Simón
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Determining whether you're dealing with a rat vs. mouse infestation is the first step in solving the problem.
By Yara Simón
If the differences between a lamb vs. a sheep has kept you awake at night, the answer to your musings is simple: A lamb is just a baby sheep.
By Sascha Bos
Bunny vs. rabbit vs. hare: Do you know how to tell these animals apart? Do you know which ones are the same? We give the full rundown.
By Marie Look
Pinning down chipmunk vs. squirrel identification is trickier than you might expect. The differences between the species largely come down to size and habitat.
By Sascha Bos
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Learn how to identify coyote vs. wolf tracks, where you can expect to find the species and how their behaviors differ.
By Marie Look
The world's largest wolves weigh up to 175 pounds (79.4 kilograms) and measure up to 6 feet (1.8 meters) in length.
The pink fairy armadillo looks like something out of a children's book and is so rare that very few people have ever seen one.
By Carrie Tatro
There are tons of squirrel species around the world. Do they all have the same life span?
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You don't want an animal living in your house that's smarter than a raccoon and never rests.
Don't freak out with worry if you see a splooting squirrel — he's just cooling off in the best way he knows how.