An Instagram post about the last two northern white rhinos references a scenario conservationists have warned us about for ...

Find out exactly how big the biggest whale on Earth is and why blue whales can grow so huge when they only eat tiny creatures ...

In the early 2000s, José Juan Flores Martínez was studying for a bachelor’s degree in biology and working as a volunteer in a ...

We can be guilty of thinking that oxygen is a uniquely human need. While all land-dwelling animals breathe oxygen from the ...

A study suggests menopause gives an evolutionary advantage to some whales. The findings could offer clues about menopause in ...

A visit to the Falkland Islands, where the fearless seabirds navigate the rugged topography with tenacious spunk, shows the ...

Males engage in a two-week-long sex marathon with as many females as they can find. Each frenzied encounter can last up to 14 hours. As soon as he’s done with one female, he moves on to another, ...

Many people ask how old different fish species get. Here are a couple of examples. Brook and brown trout are relatively short ...

A finger-length fish has reignited a long-running debate about self-awareness, cognition and how much we’ve underestimated ...

These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

Australian researchers have uncovered how a particular strain of a diarrhea-causing parasite managed to infect more animal ...

A research team led by Hiroshima University and Tokyo University of Agriculture and Technology have proposed a neuroendocrine mechanism in bony fish that signals ovulation from the ovaries to the ...