Two more cases of the New World screwworm have been confirmed in Texas, demonstrating the difficulty of stopping the spread ...

The evolution of sex remains one of biology's greatest puzzles. While sexual reproduction dominates across the animal kingdom ...

It may sound too bizarre to be true, but the Amazon molly (Poecilia formosa), a fish that inhabits rivers, lakes, and swamps in Mexico and Texas, exists over much of its range in populations that are ...

The question of why females mate with multiple males has long puzzled evolutionary biologists. A new study of African ...

Nick Kroll, June Diane Raphael, Zach Woods and Sabrina Jalees lead the cast voicing horny woodland creatures looking for sex and maybe love.

A small male pufferfish in the genus Torquigener spends seven to nine days sculpting a circular sand structure roughly two ...

It may seem odd to think of aphids producing their offspring while already pregnant, but in actuality, it is not an unusual phenomenon among insects. Aphids have been able to adapt to a reproductive ...

Our study found that masturbation is widespread across birds with a strong evolutionary history, meaning that it’s an ancient ...

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