Biology

Spinosaurus mirabilis was a force to be reckoned with

Researchers sequenced the genomes of tumors from almost 500 domestic cats and found remarkable parallels with human and dog cancers

A newfound site in the Italian Alps holds one of the largest collections of Triassic dinosaur footprints ever seen

Axolotls can completely rebuild their thymus, a key immune organ

These amorous creatures could put Casanova to shame—from beguiling dancing seahorses to peacocking spiders

The Bronx Zoo is celebrating 15 years of its extremely popular Valentine’s Day “Name a Roach” program

Avian enthusiasts around the world will identify and count birds from February 13 through February 16 as part of a massive community science project

Why the simple act of kissing—which can be traced back 21.5 million years—continues to confound evolutionary biologists

Pachyderm whiskers are more flexible at the tip than at the base, allowing elephants to complete delicate tasks with their incredibly strong trunk

For almost two decades, scientists have debated whether sponges or comb jellies represent the first animal lineage. Now some are calling for a more harmonious approach

Many different bird species have been affiliated with the Seattle Seahawks’ mascot, but none is technically a “seahawk”

Groundhogs don’t really forecast the weather, but there are plenty of other strange things about these rodents