The Keltraxans help Toby out

While you mull over your options, the anonymous voice that represents your captors interrupts again. "OUR OBSERVATIONS INDICATE THE MALE IS UNABLE TO READY HIMSELF FOR MATING."

"I guess we'll just have to call the whole thing off," you say, sitting up and once again trying to assume a position that could possibly preserve your modesty.

"UNACCEPTABLE. OUR OBSERVATIONS INDICATE THAT THE FEMALE IS PRIMED FOR MATING AND REQUIRES SEXUAL RELEASE. ALSO, YOUR CURRENT ACTIVITIES ARE UNINTERESTING TO OUR ZOO-GOERS. WE HAVE PROFITS TO THINK OF. WE WILL FACILITATE YOUR MATING."

Oh, well, it's nice to know your captors are concerned about their zoo's business model. You manage not to roll your eyes and bite back another sarcastic comment. Instead, you are about to ask how they plan to do this, when you hear a gasp from Toby.

Turning back to look at him, you notice immediately that his cock is now erect. More than erect, in fact—it's a good two or three inches longer than it had ever been. Toby had always been about average, enough to satisfy you on the good days. Now his cock is a thick, quite honestly imposing member, and you can't help but wonder how different it would feel inside you.

It also smells wonderful. As Toby closes the distance between you, his new scent quickly overpowers any other objections to what is happening. And it happens quickly.

Toby grunts, seizes your shoulders, and quickly flips you over. You don't have much say in the matter: you feel your ass rising into the air automatically, your knees parting just enough to give him the best angle of entry. Toby wastes no time. His hands using your rear for the perfect handholds that provides, he plunges his new endowment deep into you.

A whimpering, "Uhhhhh," escapes your lips. His cock stretches you wide. It should be painful but it isn't—whether this is an effect of your arousal or something else the Keltraxans have done to the two of you, you have no idea. In fact, you won't be having much in the way of ideas for a while. Your conscious mind begins to recede, letting a more primitive, animalistic part of you surface and take control.

Animal!Nina wants Toby. It's that simple. Animal!Nina doesn't care, is not even aware, that there are hundreds, possibly thousands of spectators to this act. She doesn't care that Toby is her *ex*-boyfriend. The concept of being captive or escaping captivity is far too complicated for her right now.

What matters instead is the swift, unyielding sensation of Toby's cock taking you from behind. With each thrust, Toby claims you a little more. His new size allows him to stimulate parts of your body you haven't felt awakened before.

You thrust your hips backwards to meet him. He slaps your ass a couple of times, grunting with clear satisfaction, then leans protectively over your body and reaches around you, cupping your breasts. He massages your tits possessively, exploring every inch as if to confirm their firmness, their readiness to be filled with milk for the children he is going to put in you.

You dig your fingers into the mattress, extending your arms in front of you and lowering your head. This submissive gesture spurs Toby on even further, and it also allows you to raise your ass even higher. You are begging to be bred.

Toby's cock has done more than grow. You can sense the impending orgasm. Your own body begins to tighten like a spring storing energy. Your breathing transforms from quick and deep to shorter and shorter gasps.

Toby straightens up, sliding his hands along your back until they rest on your hips again, and then thrusts forward one more time. It pushes him over the edge, and he begins to fill you.

This is more than you've ever felt in your life. Back on Earth—wait, is that how you're starting to think?—you always had to worry about condoms, about pregnancies and STIs. You had to be *responsible.* You couldn't just think of the pleasure without considering the potential problems.

Now everything is different. Beyond the fact the Keltraxans have made it clear they expect you to get pregnant from this encounter, this feels like a natural consequence of fucking Toby. You hadn't given much thought to whether you were going to have children, but now the idea of not becoming pregnant, of not being bred, seems impossible. What were you thinking?

This is what races through your mind as Toby's sperm floods into your womb. Lubricated now by your juices, your bodies' sweat, and his own seed, Toby's cock shows no signs of softening or slowing. He continues to fuck in and out of your well-stretched, gaping hole, spurting load after load of cum into you.

His massive cock fucking you. His hands squeezing you, directing you, owning you. His breath on your neck. His scent, your scent, mixed inexorably like the fluids dripping out of your wanton cunt. It's all too much.

And so you come.

You press your head down into the mattress and let a small shudder pass through your body. This is better than anything else. There's no way else to think of it. If *this* is what's in store for the two of you from now on, you wonder if you could possibly object. On Earth you might have felt some shame, or at least some **** to give yourself over so totally to this animal-like behaviour. But you're *not* on Earth anymore, and probably will never go back. The Keltraxans have taken away that choice from you. And instead of considering this captivity like you did at first, you're a little shocked to see it as a kind of freedom….