The use of vertebrate animals in Research, teaching, outreach and other activities performed by or on behalf of Purdue University must be guided by the highest ethical standards and adhere to ...

From genetics alone, scientists can now predict how long any of myriad different creatures can live. The “lifespan clock” estimates vertebrate animals’ (those with a backbone) longevity — including ...

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

Paleontologists describe a 255-million-year-old weigeltisaurid fossil that likely glided through the air with the help of expansive winglike membranes Tess Joosse Scientists pulled this weigeltisaurid ...

Over 500 land-based vertebrates — animals with spines — are on the brink of extinction. “We are no longer looking at the loss of obscure species that most people aren’t interested in,” Tierra Curry, a ...

After losing its original eyes, one of our distant ancestors may have done what evolution does best: tinkered with what was available, reshaping a single central visual organ into two new eyes. That’s ...

Global change is eroding life on earth at an unprecedented rate and scale. Species extinctions have accelerated over the last decades, with the concomitant loss of the functions and services they ...

Federal regulators in the United States are pushing harder than ever to reduce and eventually replace animal testing in drug ...

The aptly named resplendent quetzal is prized for its plumage. Golden poison frogs are popular creatures in the pet trade. Pangolin meat is considered a delicacy, and their scales are used in ...