A pleasing detail from Built for Speed, University of Idaho zoologist John A. Byers’ 2003 account of a year studying pronghorn antelope in western Montana:

“It can be really bizarre if, when I’ve been alone for several hours, I spot a human standing or walking in the distance. For an instant, my reaction is, ‘What the hell is that?’ A large mammal that walks on its hind legs seems very strange.”