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 ...

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 ...

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

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 ...

To get to the bottom of it, they looked at the fish’s anatomy and physiology and discovered something curious in their gills.

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 ...

Sleep may have evolved to help reduce DNA damage in nerve cells long before they became centralized in the brain, a study ...

Sperm whales are named after the waxy substance found in their large heads called spermaceti. The spermaceti is an oil sac ...

The loggerhead turtle population was on the brink of extinction but after 40 years of careful management, the largest ...