Some were the size of a dog. Others were as large as polar bears. A newly-discovered fossil of the ferocious hyaenodont is ...
The whitefin swellshark has been assessed by the International Union for Conservation of Nature (IUCN) as Critically Endangered for a number of years due to declines largely attributed to fishing ...
Through the glass of a fish tank, where academic institutions preserve them and hatcheries put them up for sale, axolotl are ...