Researchers have found evidence that snakes can be distinguished from others not by sight but by smell. "Reptiles are very understudied," said Noam Miller, a comparative psychologist at Wilfrid Laurier University in Ontario, Canada.
Miller: "There's a bias that they're boring, low-cognitive animals, and that's completely wrong" Future tests could focus on tree vipers or rattlesnakes, which prefer to dwell with relatives and be less stressed around other snakes.