Animals
Scientists Find a Hormone in Spiny Dogfish Sharks That Experts Thought Sharks Lacked
A study in Canada detected cortisol in the blood of a small shark species.
A Big Genetic Study of Cat Cancer Finds Surprising Links to Human Cancer
University of Guelph researchers studied tumors from almost 500 cats and say the results could help both species.
A Humpback Whale Mother Stayed Near Her Calf for Hours, Scientists Report
Researchers say the rare sighting off Australia's Gold Coast may offer clues about whale emotions.
Scientists Find a Hidden "ID Card" in Cat Urine
Japanese researchers say 13 unusual fatty acids may let cats recognize each other long after a scent is left.
A New Snake From New Guinea Is Named After the Guitarist Slash
The musician, who has loved reptiles since childhood, now has a snake called Lielaphis slashi.
Scientists Discover a New Frog Hiding in the Amazon's Flooded Forests
The frog, named Adenomera varcena, looks almost identical to its relatives, but its DNA and call are different.
A Coral Reef Off Benin, Thought Dead for 60 Years, Is Full of Life
Cameras found healthy coral and eight kinds of fish more than 50 meters below the surface.
Crocodiles Raised in Captivity Settled Into the Wild Instead of Heading Home
A study in Bangladesh's Sundarbans suggests older captive crocodiles could help restore dwindling populations.
Long-Lived Bats May Hold Clues to Healthy Aging in Their DNA
A study of eight bat genomes links long lives to strong immune defenses and a habit of removing damaged cells.