Redsand Canyon Cyberiad theory.

Ruenna nodded, recalling her unofficial "baby daddy" title with a light chuckle. She might have also laughed at Towhee's suggested title for herself, if she hadn't been caught off guard by the implication. 

"Oh! You mean nurse the kids? Would it help, you think..?" Her surprise was genuine, as was her curiosity. It wasn't a solution she had ever considered, since stemming the milk production had been Towhee's original goal. Rue supposed it made a certain kind of sense though, given that they weren't trying to erase Towhee's supply entirely, only diminish it until her own pups came. 

Ruenna gave a thoughtful nod. "I'm game. Let's give it a try." She then adjusted her position, making her own supply unavailable to the pups. Soon the distressed, protesting squeaks would begin.