A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding ...

Knife-toothed reptiles called sebecids went extinct on the mainland 10 million years ago. New fossil evidence puts them on an island 4 million years ago.

After the demise of the dinosaurs following an asteroid strike 66 million years ago, mammals became Earth's dominant land ...

It took nearly 100 years for a duo of endangered Philadelphia Zoo tortoises to become parents and the "Golden" moment is now ...

A controversial idea suggests the ancestors of echidnas were more like the platypus. For the first time, fossil evidence ...

Four baby Galapagos tortoises made their public debut Wednesday at the Philadelphia Zoo. They are the offspring of the zoo’s ...

Four months into his new job, Kirk Smith is intent on showcasing Vallejo's attractions beyond the amusement park, including ...

One of the youngest, biggest residents at the St. Louis Zoo is preparing to make his public debut — but first, he has to ...

One big cat in the U.S. stands out for its extraordinary jumping ability clearing over 20 feet in a single leap thanks to powerful hind legs flexible spines and perfect muscle coordination. This ...

John Fabiano, a Buffalo, NY native, left the tech world and now travels the globe documenting dogs and their relationship ...

using biopsied cells from animals to produce food without slaughter. A handful of companies are now licensed to sell cultivated meat in a few nations, including the United States. Last year ...

He is project leader of the Human Ageing Genomic Resources program, which keeps the AnAge database of maximum animal lifespans ... food chain), may take 150 years to reach sexual maturity.