Mammals

Elk vs. moose comparisons are a lot easier to make when you realize that two of the largest members of the deer family differ significantly in size, behavior and appearance.

By Talon Homer

An adult horse should typically eat about 1.5 to 2 percent of its body weight in food each day. This means a 1,000-pound (454-kilogram) horse may eat 15 to 20 pounds (6.8 to 9 kilograms) of hay and grass daily.

By Ada Tseng

Gorillas — one of the most powerful great apes — have a diet that might surprise you. Even though they’re massive and strong, their meals consist mostly of plants. But let's get specific: What do gorillas eat in the wild, and how do their diets change depending on where they live?

By Talon Homer

Ah, the great marmot vs. groundhog distinction. These two burrowing, chubby members of the squirrel family that are often mistaken for the same animal.

By Talon Homer

Goats are endlessly curious animals famous for their ability to eat just about anything — but don't be fooled. A goat's diet isn't just about munching on random objects; it requires careful balance to keep all the goats healthy and thriving. So, what do goats eat, really?

By Yara Simón

When it comes to big cats, jaguar vs. leopard identification can be tricky due to the animals' similar spotted coats. However, these wild cats belong to separate species within the genus Panthera and have distinct differences in appearance, behavior and habitat.

By Mack Hayden

When you think of rodents, you might think of tiny mice running through your cellar or the adorable hamster that was your 5th grade class pet.

By Ada Tseng

Polar bears are one of the largest mammals on land; only the African elephant can tower over the polar bear in this corner of the animal kingdom. But how do you measure the biggest bear? By height or by weight?

By Ada Tseng

One of the most unique about whales is that they're the largest animals to ever exist on Earth — even bigger than the largest dinosaurs to have ever roamed the planet. That's right: The biggest whale of today dwarfs the T. rex.

By Ada Tseng

The eland is one of the largest antelopes — and one of the most graceful. Known scientifically as Taurotragus oryx, the eland lives in Africa, mostly in eastern and southern Africa.

By Yara Simón

Sables are luxurious little animals. These fur-bearing mammals, native to the forests of Eurasia, have sandy yellow, light brown, dark brown and black coats, which are valuable commodities in the fur trade. Sable pelts are a symbol of wealth and elegance.

By Yara Simón

The naked mole rat (Heterocephalus glaber) is found in the dry regions of East Africa. These hairless, wrinkly rodents live in underground colonies that function more like insect hives than typical mammal groups.

By Mack Hayden

The bowhead whale (Balaena mysticetus) is found in the icy waters of the Arctic. These are the longest-living mammals; some bowhead whales live for over 200 years. That's older than many countries' independence!

By Nicole Antonio & Mack Hayden

The grolar bear, also known as the pizzly bear, is a hybrid animal that's the result of crossbreeding between a polar bear and a grizzly bear, two species typically separated by geography and habitat.

By Nicole Antonio

Bears are incredible creatures, but they can also be some of the most dangerous animals on the planet. While even the most dangerous bear will typically avoid humans, under the right (or wrong!) circumstances, it can become aggressive, especially if it feels threatened or if you're in its territory.

By Talon Homer

What's the difference between a purring feline on your lap and the most dangerous cat in the world? Whether large or small, the skilled hunters on this list capable of taking down prey — and sometimes they come into contact with humans, resulting in fatal or serious injuries.

By Zach Taras

Since many of us no longer live in small agricultural societies, while you might be familiar with the idea of a mule, you might not know about the specifics of the actual animal.

By Zach Taras

The liger is the offspring of a male lion (Panthera leo) and a female tiger (Panthera tigris). There is another type of lion-tiger hybrid called a tigon, which results from the breeding of a male tiger and a female lion. But ligers specifically have male lions as their fathers and female tigers (aka tigresses) as their mothers.

By Ada Tseng

Today, we're exploring one of Africa's most formidable and awe-inspiring animals: the Cape buffalo. This powerhouse bovine isn't just a member of the prestigious "Big Five" — it's also one of the most dangerous animals on the continent.

By Nicole Antonio

Did you know the word "hippopotamus" comes from the ancient Greek for "river horse"? But don't let that fool you; this big, lumbering mammal is anything but a horse. In fact, it's one of the most powerful animals living in Sub-Saharan Africa today.

By Talon Homer

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

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