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image: Slippery Passion

Slippery Passion

By | July 1, 2014

Observe the sinuous sensuality of mating brook lampreys (Lampetra planeri).

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image: Sly Guys

Sly Guys

By | July 1, 2014

Across the animal kingdom, dominance isn’t the only way for a male to score. Colluding, sneaking around, or cross-dressing can work, too.

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image: Females in Charge

Females in Charge

By | April 21, 2014

Insects in Brazil go beyond simple behavioral sex-role reversal. In these animals, the females use an erectile organ to penetrate the male’s genital chamber.

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image: Gift-Wrapped

Gift-Wrapped

By | February 3, 2014

Female spiders prefer gifts from males to be wrapped in silk.

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image: Review: “Green Porno”

Review: “Green Porno”

By | January 29, 2014

Isabella Rossellini explores nature’s kinky side in a one-woman show.

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image: Males Court Bearded Ladies Less

Males Court Bearded Ladies Less

By | November 6, 2013

Blue badges that make female lizards less attractive to potential mates are paradoxically common.

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image: Week in Review: October 28–November 1

Week in Review: October 28–November 1

By | November 1, 2013

Neuronal DNA variation; male hormone sparks mosquito egg production; pulvinar neurons aid primate snake detection; spiders and cryptic female choice

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image: Robo Frogs

Robo Frogs

By | October 1, 2013

University of Wisconsin researcher Barrett Klein’s robotic tungara frogs call to females.

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image: Lampreys Heat Up Before Mating

Lampreys Heat Up Before Mating

By | June 28, 2013

Fatty tissues on backs of male fish get warmer in the presence of potential partners.

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image: Croakus Interruptus

Croakus Interruptus

By | June 1, 2013

During frogs’ hectic mass breedings, females often die. But one species appears to have found a work-around: males harvest and fertilize their partners' eggs after her death.

2 Comments

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