Here’s the front cover of latest issue of Ethology, a well known journal of animal behavior. It shows two snakes (presumably male) in competition (presumably for females). The caption is cool (my emphasis):
Male western diamondback rattlesnakes (Crotalus atrox) coming off vertical combat display in Sonoran Desert, Arizona. One is cheating by using the ironwood stump as a crutch and will win the endurance contest.
Photo reproduced by permission of Alex Badyaev (www.tenbestphotos.com)
I didn’t know this species did this, nor that they could cheat!
h/t: Ed Yong via Matthew Cobb