In "The Creatures' Guide to Caring," Elizabeth Preston traces myriad methods of caregiving across the natural world.

For decades, biologists thought that early tetrapods, ancient vertebrates that started conquering the land over 300 million years ago, developed like modern amphibians—beginning their lives as purely ...

The first four-legged vertebrates did not grow up like tadpoles after all. That idea has shaped the story of life on land for ...

In 2016, Arjan Mann was working on his doctorate when he visited the Field Museum in Chicago and spotted a fossil that stopped him cold. He could not identify it. The specimen was tiny, delicate, and ...

Dallas and Fort Worth zoos have welcomed hundreds of birds, insects, mammals and more since January. Here’s a look at some of them.

We’ve all seen some version of the classic evolutionary diagram. A fish crawls out of a primordial swamp, sprouts legs, ...

Palaeontologists have found new evidence that the early ancestors of amphibians, reptiles and mammals did not have a larval ...

The life cycle of the Western toad is both dramatic and highly entertaining. Ecologist Dede Olson has studied the mountain-dwelling Western toad her whole career. The surprisingly charismatic high ...

The initiative is part of a long-term conservation effort to restore the endangered species to its native lands Getty The Detroit Zoo sent 6,855 critically endangered Puerto Rican crested toad ...

The Detroit Zoo recently gave hope, help, and future hops to Puerto Rico by sending 6,855 tadpoles to the island territory. The tadpoles, hatched at the Detroit Zoo, will be released into a rainforest ...

The Detroit Zoo is sending nearly 7,000 Puerto Rican crested toad tadpoles to a rainforest in Puerto Rico as part of an effort to aid in the species' recovery. According to the Detroit Zoo, 6,855 ...