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 ...

How do butterflies mate to form the next generation? Learn about butterfly mating and courtship behavior.

A new study of wild bats reveals that an animal's immune system is shaped by more than its need to fight infections. Researchers from the University of Maryland have found that sex, age and ...

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.

The mockumentary is an underrated genre of comedy, but this classic sci-fi one still holds up today through its sharp writing ...

When it comes to courtship, mankind has nothing on the animal kingdom. The evolutionary imperative of finding a suitable mate has produced a staggering array of rituals, from black grouse ...