When the scientists paired two male octopuses in the same setup, the males interacted by touching arms, but they never ...

Scientists at Cornell University may be closing in on the long-sought “holy grail” of male contraception: a safe, reversible, ...

Scientists found that the male’s hectocotylus, the specialized arm for mating, is lined with receptors that can sense ...

The hectocotylus is both a reproductive and sensory organ, Harvard scientists and others have found. Octopuses are some of ...

For mating male octopuses, one limb is more important than all others. That is the third right arm or hectocotylus, which is ...

A rare crab found in India shows both male and female traits, helping scientists unlock secrets of sex development and ...

The Omaha Henry Doorly Zoo and Aquarium announced the death of an okapi Monday. According to a post on social media, the 24-year-old female was named "Kali."Zookeepers said she began having ...

The specialized arm that male octopuses use for mating is also a sensory organ that can detect the ovarian hormone progesterone, according to new experiments conducted by Pablo Villar and colleagues.

The Amazon molly is an all-female fish that ditched sexual reproduction entirely, thriving for over 100,000 years through ...

Loneliness affects people of all ages and backgrounds. Cases have been rising globally since the 1970s, prompting both U.S. and global health authorities to recognize it as a widespread public health ...

If you've never seen an okapi, you're in for a real treat. These guys look... bizarre, but somehow adorable! In this clip, we get to watch the stripey baby animal go outdoors for the first time. The ...