The Red Queen was right: We have to run to keep in place

Biologists quote Lewis Carroll when arguing that survival is a constant struggle to adapt and evolve. Is that true, or do groups die out because they experience a run of bad luck? Charles Marshall and Tiago Quental of UC ...

Do cats purr when humans aren't around?

Why do cats purr? Humans tend to think that purring is a sign of happiness in a cat – and indeed it can be – but there are other reasons why our feline friends produce this particular vocalisation.

A mathematical model for animal stripes

The back of a tiger could have been a blank canvas. Instead, nature painted the big cat with parallel stripes, evenly spaced and perpendicular to the spine. Scientists don't know exactly how stripes develop, but since the ...

Genome study offers clues about history of big cats

(Phys.org)—A large international team of researchers has conducted a genetic analysis and comparison of the world's biggest cats to learn more about their history. In their paper published on the open source site Science ...

Tiger population nearly doubles in Nepal

Nepal's wild tiger population has nearly doubled over the last nine years, officials said Monday, in a victory for the impoverished country's drive to save the endangered big cats.

Scientists reveal family tree of 'super-sized lions'

(PhysOrg.com) -- The giant cats that roamed the British Isles, as well as Europe and North America, as recently as 13,000 years ago were lions rather than giant jaguars or tigers, a team led by Oxford University scientists ...

page 1 from 10