When she first moved to this town, everyone told her to avoid the local park, since it was more-or-less overrun with anthro rabbits. When she happened to walk past it one day and caught a glimpse of them, she realized what everyone was talking about, blushed and quickened her pace. To be doing that in broad daylight, grunting and thrusting away without a care in the world...not that she knew what that sort of thing felt like. Throughout college her roommates had called her prudish, but she was focusing on her career rather than men, and just wasn't interested in such things.
That was until she started feeling unnaturally warm one day, and found the fur spreading across her shoulders and snaking down her arms. The doctor asked if she'd been in contact with any unknown fluids or had engaged with...y'know, those people, and she told him she honestly didn't think so. He sighed and said she'd better get used to it, since these sorts of things weren't usually reversible.
She mourned her humanity, but tried to soldier on as best she could. But that image from that day by the park wouldn't leave her mind...she kept seeing herself in that girl's place, bent over, taking it from behind...she blushed again, but not from embarrassment.
So it was that she found herself wandering the park, not really knowing what she was looking for, but realizing she'd found it when the rabbit man strode toward her, his pride on full display. They both knew why they were here.
"Be gentle," she breathed. "It's my first time..." He chuckled. "We're rabbits, hon. In a few hours you'll be upset when I need to take a break." And he was right.