Thankfully infrastructure was still functioning, at least in areas where airplanes hadn't fallen out of the sky when the pilots turned into human-dogs anyway, so the automatic doors were allowing the now dog-like humans to exit and enter as they pleased. Tracy was humming along, observing as a mom had laid down on the ground and allowed her twin babies to nurse, Tracy felt that she should be seeing something different there, what with the woman having six teats. But she didn't.
"Oh well." She said to herself as she continued, her thong had steadily been working its way down her legs, forcing her to stop and shake it off. "That reminds me!" She said as she sat back down, "I've gotta clean myself!" And Tracy started licking her privates clean from her earlier attempt at relieving herself. Something she'd never would've expected herself to do today.
Once she as done, a skinny guy came up behind her, sniffing eagerly, Tracy knew she was between periods, so she should be fertile, she lifted her tail and looked back at him.
He needed no further invitation, and Tracy found herself enjoying getting mounted in the parking lot in front of the many other changed human-dogs, and not caring.