Guess the species (either common or Linnaean) by tweeting at us--we're @PopSci--and get your name listed right here! Plus eternal glory, obviously. Update: We have a winner! By Dan Nosowitz Published ...

At first glance, the Southern Viscacha may look perpetually disappointed. Its droopy eyelids and downturned mouth give it a mournful appearance. But the scientists say this expression is not emotion, ...

Viscachas, South American rodents resembling rabbits, have become viral sensations for their perpetually tired expressions, resonating with Gen Z's mood. Native to rocky regions of Argentina, Bolivia, ...