Wolves of the wilderness are calling. Will your dog answer?

Researchers of the Department of Ethology, Eötvös Loránd University (ELTE) have been investigating dogs' reactions to wolf howls. Are there dogs that are more prone to reply with howling? Are these dogs genetically closer ...

Hormone clue to snail shells' spiral

An enzyme that makes the male sex hormones has unravelled a fresh clue about how snail shells come to be curly. 

Testosterone regulates solo song of tropical birds

(Phys.org)—In male songbirds of the temperate zone, the concentration of sex hormones is rising in spring, which leads to an increase in song activity during the breeding season. In the tropics, there has been little evidence ...

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