That was something else the sponsors of the Park was testing besides making sure guests wouldn't melt if they caught the common cold or guests turned into predators wouldn't instinctively attack guests turned into prey.
They were testing to make sure they could create supporters to the cause.
When the millionaires and billions who are had come together to create TF Park USA, it wasn't just to create an experimental new form of vacation. All of the sponsors were closet furries who sincerely wanted to live life as half-animal hybrids nudists. But instead of risking their own wealth, status, names, and legacies, they would instead have their paying customers fight to have furries normalized for them.
Thus was why they had inserted so many discouragements against becoming permanent residents of the park, removing all free medical aid and free food. If the guests wanted to keep their new form, the guests would have to fight for it to be normalized in the outside world.
It was decided that doing nothing letting other people taste the lifestyle and make their own choice was too wasteful. And it was unanimously voted that direct mind control was too risky (in spite of having made great leaps in that field), far too likely to backfire legally, and would demonize the cause for centuries if uncovered.
So they would meet things halfway. Take 'the mind rules the body, but the body shapes the mind' to its ultimately conclusion. This was another reason for the gender rewrites to ensure a 50/50 split for male and female anthros. Their minds would not just be dealing with the instincts the creators of the hybrids form had tailor made to make the guests feel encouraged to embrace their new forms... but also many would be thrown off kilter by their new gender as well... Since that had been the key part. Homosexuals would remain homosexuals, and heterosexuals would remain heterosexuals, regardless of what gender they became. And if they found themselves attracted to a new partner ... they would have all the more reason to fight for their new form in the outside world. Doing all the risks and facing public opposition that the sponsors of the park didn't want to face themselves.
Thus, when Peter saw a male wolf (unknowningly gender flipped much like him... this was intentional on the part of the designers when assigning who would become what), stumble into the space next to the fences, looking as desperate for a emergency phone to voice his complaints as her...
Her custom made instincts screamed one thing in her new brain... this naked wolf man was HOT.
"Uh... hi," Peter... well, it was Petra now, stammered.