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Stories by Karen Hopkin

Some Wolf Pups Show Innate Fetching Talent

Some wolf pups will play fetch with a stranger, suggesting that an ability to playfully interact with people could have come before, and played a role in, dog domestication.

January 25, 2020 — Karen Hopkin

Curiosity Killed the ... Mouse?

The cat parasite Toxoplasma gondii boosts curiosity in mice—which makes them more likely to be caught by cats, thus continuing the parasite’s life cycle. Karen Hopkin reports...

January 23, 2020 — Karen Hopkin

Monogamy May Be Written in Our Genes

In animal studies, a set of 42 genes involved in neural development, learning and memory, and cognition seems to be associated with monogamy

September 19, 2019 — Karen Hopkin

Chemists Investigate Casanova’s Clap

In his memoirs, the womanizing writer Giacomo Casanova described suffering several bouts of gonorrhea—but researchers found no trace of the microbe on his handwritten journals. Karen Hopkin reports...

May 2, 2019 — Karen Hopkin

Elephant Weight Cycles with New Teeth

Elephants have six sets of teeth over their lives, sometimes two sets at once. At those times, they can extract more nutrition from food and put on weight.

February 14, 2019 — Karen Hopkin
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