You hesitate, alarm creeping into your mind.
Before it was just simple love-nibbling and nuzzling, you haven't given much thought about how increasingly erotic and intimate this whole thing is getting. But this... This is going to cross a line into beastiality if you let the doe suck you off, she's a reindeer - an animal - and you're human... You're human, right? Examining your furry self seeds doubt into you, you raise your hands up to feel your cervine features. You don't remember humans being this hairy or having ears this pointy, nor do they have antlers or tails.
It seems to you that you are obviously a reindeer just like her, you don't know why you are concerned.
You brush the thought off and spread you legs in consent, letting her muzzle close around your dick and milks it gently like a fawn. Your groin lights up like a forest fire, your knees would have buckled from the unexpected sensitivity if it hadn't been your other herdmates stopping their snuggling to support you. Your prick ejaculates almost immediately, and then ejaculates again and again as she continues her suckling - squirting out drizzles of precum and semen down her throat. With each load you blow, your genitals slowly shrinks and sinks into your crotch until it's nothing more than a feminine slit that's dripping wet with arousal.
"Ohhh! Ahhh, ahhh..."
Feeling your womb growing in finally pushes you over the edge into climaxing, you tense and moan in ecstasy as you gush across the straw flooring... You sink to the ground, basking in the afterglow of your first ever female orgasm...