A 23-million-year fossil record shows Africa's giant mammals slowly vanished over time because evolution stopped replacing them.

Our understanding of animal behavior depends on observation. Researchers can study how animals are born, grow and develop. We can gather evidence of how they interact with each other and their ...

Throughout history, our planet has been home to some colossal creatures. From prehistoric animals, like dinosaurs and wooly mammoths, to today’s modern giants like blue whales and elephants. While ...

High in dense bamboo forests in the misty, rainy mountains of southwestern China lives one of the world's rarest mammals: the giant panda, also called the panda. Only about 1,500 of these ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. The Goliath birdeater, Earth's largest spider by mass, is a ...

Good news for giant pandas (and the people who love them): the International Union for Conservation of Nature (IUCN) no longer considers them to be an endangered species, LiveScience reports. On ...

Size shapes the way animals move, hunt, and survive. For example, in the ocean, ginormous creatures rely on their massive bodies to travel long distances or ambush prey. On land, there are large ...

The largest grouper in the Atlantic Ocean is so big that it can eat a four-foot-long shark in one gulp and makes noises so loud that nearby scuba divers feel an effect much like a sonic boom. These ...