The fish use their stomach to swell up to three times their size. Is this why they can’t use the organ to digest proteins?

The cephalopods resisted temptation for up to 130 seconds to earn their favorite food, hinting at sophisticated cognitive abilities such as planning for the future.

This marine animal looks like a sea star, but don’t be fooled.

In an unusual evolutionary twist, local stick spiders have come up with an almost identical repertoire of color morphs in multiple locations.

Report finds that pathologist involved in anonymous defamation case committed multiple acts of misconduct; growing eggs from stem cells; neutrophils’ role in metastasis; convergent evolution in birds

Diverse genetic changes lead to remarkably similar hemoglobin adaptations of diverse bird species, a study finds. 

Caffeine-producing plants use three different biochemical pathways and two different enzyme families to make the same molecule.

Trap-jaw spiders have the fastest, most powerful bite of any arachnid, scientists show. 

The predatory toxins employed by animals separated by millions of years of evolution are virtually identical, a study shows.

Physics drove the convergent evolution of swimming in 22 unrelated marine species, a study suggests.