Q. I notice you sometimes include scientific names of animals in your columns. One time you identified a timber rattlesnake; another time, two turtles (an Alabama redbelly turtle and a stinkpot).

Research suggests that dolphins develop a lifelong vocal “name.” Here’s how they evolved this high level of social identity, once thought to be uniquely human.

Trish Khan, the Milwaukee County Zoo's curator of primates and small mammals, has worked at the zoo for more than 30 years, and in that time, methods for naming animals have changed. "It used to be a ...