Related topics: mice · species · brain · neurons · fossil

Big-mouthed babies drove the evolution of giant island snakes

Some populations of tiger snakes stranded for thousands of years on tiny islands surrounding Australia have evolved to be giants, growing to nearly twice the size of their mainland cousins. Now, new research in The American ...

When to have kids: A complex question for hazel dormice

Claudia Bieber from the Research Institute of Wildlife Ecology (FIWI) of the University of Veterinary Medicine, Vienna, and fellow scientists analysed a capture-recapture data set on common dormice (Muscardinus avellanarius) ...

Wild birds respond differently to the first long days of a year

The lengthening of days in late winter is an important signal that stimulates the reproductive activity of many animals. Animals living in the milder climatic conditions of southern Europe usually begin breeding earlier in ...

Huge hamsters and pint-sized porcupines thrive on islands

From miniature elephants to monster mice, and even Hobbit-sized humans, size changes in island animals are well-known to science. Biologists have long believed that large animals evolving on islands tend to get smaller, while ...

Why bats, rats and cats store different amounts of fat

Animals differ in the amount of fat they carry around depending on their species, status and sex. However, the causes of much of this variation have been a mystery. The Bristol study shows that many differences can be understood ...

Ruthless boas know when to ditch their squeeze

Boa constrictors can sense the heartbeat of their quarry as they suffocate it, thus giving themselves the signal to know when the prey is dead, scientists say.

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