As darkness settled over a forest of southern Vietnam, a “long”-limbed creature with “dagger-like spines” climbed into a shrub and fell asleep. But the night wouldn’t be restful. Passing scientists ...

Intrigued, they took a closer look at the “distinct” reptiles and quickly realized they’d discovered a new species: Acanthosaura cuongi, or Cuong’s horned tree lizard. An Acanthosaura ...