We lost them along the way, but our relatives still retain them for balance. Discover the primates with the longest tails.

N ear a river in the foothills of the Himalayas, a 2-foot-long predator with "reddish" eyes moved through the grass. Its "striking and vivid" coloring helped it go largely unnoticed - until some ...

Researchers suggest the rows of pointed structures on the heads of spotted ratfish are true teeth, offering the first known ...

Donkeys and mules may look alike, but they’re not the same animal. Discover some key differences in these unique and valuable animals.

Romulus and Remus are doing what puppies do: chasing, tussling, nipping, nuzzling. But there’s something very un-puppylike about the snowy white 6-month olds—their size, for starters. At their young ...

With two brightly feathered macaws perched on his hands, their long tails brushing against him, Albi Albar Ramli balanced on ...

The magpies are out and about right now. It’s because the birds, like many other animals that call Colorado home year-round, ...

Arizona is home to over 800 native animal species, ranging from well-known rattlesnakes and javelinas to rarer creatures like ringtails and jaguars. Arizona also boasts unique species like the ...