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 ...

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.

When it comes to impressing the ladies, greater sage-grouse males know that smooth dance moves trump combative posturing. Indeed, new Yale research into these prairie-dwelling birds confirms that ...

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