The anthro cougar looked up and saw a strange creature most of the way across the stream, and realized he was staring at her. She'd never known the word for this creature before, but somehow she did- human. Naturally she was well aware of how different humans were from most animals, but her transformed form looked quite similar to a human female. Perhaps this male might like to mate with her?
She walked towards him through the water slowly, and was surprised at how he stood almost motionless until she came to him. Was he dead or something? "Hello?" she said to him as she got close enough to him for him to hear her.
The human, an 18-year-old student called Casey, mumbled, "Uh, hi!" He felt rude for looking at this strange anthro cougar, but her body transfixed him- her muscular Amazonian build, her thick breasts and ass, and the fur that covered her body, it was all just like the kind of thing he'd jacked off to hundreds of times since puberty, and it seemed like she wanted to... well, better not jump the gun, he thought. "You're... you're really beautiful."
"Thank you!" smiled the cougar. "I think you're very handsome too, human." She gestured for him to follow her out of the water, and they both stepped onto the bank of the stream. "I was wondering, would you like to mate with me?" she asked nonchalantly.
Casey's draw dropped. "Um... please," he said before he could stop himself.
The cougar giggled at his enthusiasm, and her hands touched the hem of his T-shirt. "In that case, you should remove these strange coverings from your body," she smiled, completely unaware of the stigma of such a suggestion.
Blushing, Casey allowed her to help pull them off. His T-shirt was yanked over his head and thrown to the ground, his jeans followed suit, he pulled off his shoes and socks, and the cougar practically tore his boxers from him. She licked her lips as she gazed at Casey's throbbing erection. "You have a very attractive body, human," she purred.
"Thanks," Casey blushed. "But I think yours is better."
Blushing a little herself, the cougar replied, "Thank you. In that case..." She positioned herself on her hands and knees and flicked her tail aside. "Mate me, human."
As one might guess, Casey couldn't possibly turn down an invitation like that. He positioned his cock head flush with the cougar's moist pussy lips and slid his shaft inside her. Both of them gasped and panted with pleasure as they started mating, amazed by the unfamiliar sensations; the cougar loved the huge size of a human penis, the odd slap of the balls against her hips with each thrust, and the warmth of almost hairless skin against her body. Casey, on the other hand, was amazed by the tightness of her feline slit, the soft fur against which he thrusted, the grip of her tail wrapping around his torso, and the strange mix of female and feline responses to the pleasure- her body was all feminine, but the mewls and clawed grip of her hands and feet reminded him of their differing species.
As both approached their peaks rapidly, the consequences of their embrace of the animal instinct to mate came to them almost at once. They realized, albeit without stopping their thrusts for a moment, their offspring would be neither human nor cougar, but a mix of the two. The cougar instantly accepted this, and the pang of guilt Casey felt as a part of his brain screamed that it was unnatural quickly evaporated. If this was unnatural, they would make it natural. This cougar was perfect for breeding, and he would breed her. As he thought this, he groaned and came, his semen flowing into her prompting the cougar to reach her own peak, her pussy spasming around him and ensuring he would cum into her and mate her.
The cougar rolled onto her back and kissed him softly as they both came down from the high, the deed done. The only thing to be seen was whether their attempt to mate was successful...