You're a born filler

"I prefer to fill things up." You say closing the door and pulling down your pants.
"Then I'm just the girly for you." Your new pet replies as she kneels down on all fours and turns her ass to you. You don't even have to move her skirt as it's held up by her tail. A little tug is all it takes to reveal her little asshole for you, her cock sways between her legs, slapping off her tummy, as you take hold of her hips. You don't bother to lube her up as you suspect that her creators placed some sort of auto-lube thing in her, if not then... tough. You tease your little slut first, gently prodding her hole and rubbing your cock between her cheeks. You love the cute little moans that escape her lips every time you rub up against her opening. Finally you can't restrain yourself as you line up for the big plunge. You push your head up to her and start to push in, at first you feel resistance but with a bit more pressure your head glides into the tight opening. Cora lets out a light squeal as you enter her and you feel her anus throb around your prick head. She pushes back slightly and this encourages you to get the rest in her delightful ass. With a grunt you push in further and further still, Cora pushes back and lets out moans and cries of both pleasure and pain. Finally you give a last push and her cheeks bump into your thighs. "So..umh.. Cora, do you take it..uhh... fast or slow?"