While the Discovery Channel's annual Shark Week event has given the public greater familiarity with sharks, much about ...

Add Yahoo as a preferred source to see more of our stories on Google. Two dogs mating on the beach. Why do dogs get stuck when mating? It's a question you may be asking if you've ever noticed two dogs ...

Endangered leopard sharks have been observed mating in the wild for the first time, with scientists witnessing a “threesome” involving two males and a female. The encounter was filmed by Hugo Lassauce ...

Females with more potential mates can produce offspring with fewer harmful mutations, helping populations become more ...

Add Yahoo as a preferred source to see more of our stories on Google. If you suffer from arachnophobia, this is the time of year when you're most likely to run into one of your worst nightmares: a ...

A provocative study by evolutionary biologists takes on one of Charles Darwin’s central ideas: that males adapt and compete for the attention of females because it is the females who ultimately choose ...

In examining the mating rituals of roundworms, researchers uncovered a unique approach to reproduction that maximizes genetic fitness. Sparks fly when a female nematode meets her mate in a Petri dish.

Researchers have uncovered new insights into the evolution of bird behavior, revealing why certain mating systems persist while others disappear over time. In a recent paper published in the journal ...