Scientists believe prairie dogs are “able to describe the color of clothes the humans are wearing; they’re able to describe the size and shape of humans, even, amazingly, whether a human once appeared with a gun.”
Researchers tested this theory by having one person walk into a prairie dog colony wearing different colored T-shirts at different times. “The prairie dogs will have alarm calls that contain the same description of the person’s size and shape but will vary in their description of the color. In one tenth of a second, they say, ‘Tall, thin human wearing blue shirt walking slowly across the colony.’“