The color change, driven by hormones, seems aimed at preventing males from accidentally mating with each other.

While sharks have been found with albinism and xanthism, this pale-eyed, gold-skinned shark is the first nurse shark documented with both traits, according to the new paper. Experts who spoke with ...

A small number of birds have adjusted breeding times to match earlier springs, but it's not clear whether they can breed ...

Dr. Jane Goodall DBE, UN Messenger of Peace and founder of the Jane Goodall Institute was certainly a rarity among conservationists: She was a household name. For more than six decades, she was the ...

What are some animals that give birth to huge numbers of offspring at once?” (Watch a female sea urchin produce millions of eggs.) The mola, or ocean sunfish, looks like an animal cracker someone bit ...

National Geographic has released the trailer for its gripping new documentary, "Lost in the Jungle." The story is about four Indigenous siblings, aged 13, 9, 5 and 11 months, who were stranded in the ...