There are several distinct traits that make mammals different from other animals, with the most significant ones being that ...

But enough about the whale. What is the largest bird, butterfly or marsupial? Live Science found 15 of the largest animals of their kind. Read on to find out who they are.

From the Amazon to the Monteverde Reserve, explore the 10 largest forests in the world, their important environmental value, and the threats they face.

Earth was once home to giant animals, and some are still around today. Here are five of the biggest animals to ever live on earth.

According to Batcon.org, bats have been on Earth for more than 50 million years and are the second-largest order of mammals with more than 1,400 species.

The Pacific Ocean is the largest of the Earth's ocean basins, spanning approximately 63 million square miles.

Discover the world's largest gold deposit hidden in Earth's core and learn why it's inaccessible yet slowly migrating to the surface.

Bat-viewing season is back in San Antonio. Bracken Cave Preserve, home to the world’s largest bat colony, sits at the northern edge of San Antonio in Comal County.

How do the biggest telescopes on Earth measure up in size, construction and discoveries?

Killer Whales Hunt and Feast on the Largest Fish on Earth Whale sharks are gentle, filter-feeding giants, but orcas in Mexican waters were documented attacking the animals and devouring their livers.

That “aswang” turned out to be a golden-crowned flying fox (Acerodon jubatus)—the largest bat on Earth (and the possible origin of the “manananggal,” “tiktik,” plus the other flying ...