On a mountain ridge in Peru, a 1-foot-long creature with a venomous bite sat in the afternoon sun. Its “distinct” yellow-ringed eyes scanned its surroundings, but it wasn’t the only one looking around ...

Photo from Edgar Lehr via Lehr, Lundberg, Cusi, Sites Jr., Torres and Aguilar-Puntriano (2025) On a mountain ridge in Peru, a 1-foot-long creature with a venomous bite sat in the afternoon sun.