Page 532 of my Bio book:

10 October, 2002 || 5:02 pm

"These lizards may seem to be mating, and in a sense they are, although both of them are females. There are no males in this species, called the desert-grassland whiptail. The two individuals here are involved in a complex ritual that primes the one on the bottom to lay her eggs. There is no copulation, but the female on top behaves much like a male in other species of whiptail lizards. She grabs her mate by the neck, mounts her, and wraps her tail around her abdomen. If these lizards find mates again a few weeks later, their roles will reverse. The one on top here will be on the bottom, and vise versa."

Amazing what they teach us in school, eh?

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