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 ...

Beluga whales are often called the “canaries of the sea” because they are incredibly vocal and communicate in close-knit pods ...

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.